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Publisher: Elsevier   (Total: 3043 journals)

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Showing 1 - 200 of 3043 Journals sorted alphabetically
AASRI Procedia     Open Access   (Followers: 15)
Academic Pediatrics     Hybrid Journal   (Followers: 20, SJR: 1.402, h-index: 51)
Academic Radiology     Hybrid Journal   (Followers: 18, SJR: 1.008, h-index: 75)
Accident Analysis & Prevention     Partially Free   (Followers: 83, SJR: 1.109, h-index: 94)
Accounting Forum     Hybrid Journal   (Followers: 23, SJR: 0.612, h-index: 27)
Accounting, Organizations and Society     Hybrid Journal   (Followers: 27, SJR: 2.515, h-index: 90)
Achievements in the Life Sciences     Open Access   (Followers: 4)
Acta Anaesthesiologica Taiwanica     Open Access   (Followers: 5, SJR: 0.338, h-index: 19)
Acta Astronautica     Hybrid Journal   (Followers: 331, SJR: 0.726, h-index: 43)
Acta Automatica Sinica     Full-text available via subscription   (Followers: 3)
Acta Biomaterialia     Hybrid Journal   (Followers: 25, SJR: 2.02, h-index: 104)
Acta Colombiana de Cuidado Intensivo     Full-text available via subscription   (Followers: 1)
Acta de Investigación Psicológica     Open Access   (Followers: 2)
Acta Ecologica Sinica     Open Access   (Followers: 8, SJR: 0.172, h-index: 29)
Acta Haematologica Polonica     Free   (SJR: 0.123, h-index: 8)
Acta Histochemica     Hybrid Journal   (Followers: 3, SJR: 0.604, h-index: 38)
Acta Materialia     Hybrid Journal   (Followers: 211, SJR: 3.683, h-index: 202)
Acta Mathematica Scientia     Full-text available via subscription   (Followers: 5, SJR: 0.615, h-index: 21)
Acta Mechanica Solida Sinica     Full-text available via subscription   (Followers: 9, SJR: 0.442, h-index: 21)
Acta Oecologica     Hybrid Journal   (Followers: 9, SJR: 0.915, h-index: 53)
Acta Otorrinolaringologica (English Edition)     Full-text available via subscription   (Followers: 1)
Acta Otorrinolaringológica Española     Full-text available via subscription   (Followers: 3, SJR: 0.311, h-index: 16)
Acta Pharmaceutica Sinica B     Open Access   (Followers: 2)
Acta Poética     Open Access   (Followers: 4)
Acta Psychologica     Hybrid Journal   (Followers: 23, SJR: 1.365, h-index: 73)
Acta Sociológica     Open Access  
Acta Tropica     Hybrid Journal   (Followers: 6, SJR: 1.059, h-index: 77)
Acta Urológica Portuguesa     Open Access  
Actas Dermo-Sifiliograficas     Full-text available via subscription   (Followers: 4)
Actas Dermo-Sifiliográficas (English Edition)     Full-text available via subscription   (Followers: 3)
Actas Urológicas Españolas     Full-text available via subscription   (Followers: 4, SJR: 0.383, h-index: 19)
Actas Urológicas Españolas (English Edition)     Full-text available via subscription   (Followers: 2)
Actualites Pharmaceutiques     Full-text available via subscription   (Followers: 5, SJR: 0.141, h-index: 3)
Actualites Pharmaceutiques Hospitalieres     Full-text available via subscription   (Followers: 4, SJR: 0.112, h-index: 2)
Acupuncture and Related Therapies     Hybrid Journal   (Followers: 3)
Ad Hoc Networks     Hybrid Journal   (Followers: 11, SJR: 0.967, h-index: 57)
Addictive Behaviors     Hybrid Journal   (Followers: 15, SJR: 1.514, h-index: 92)
Addictive Behaviors Reports     Open Access   (Followers: 5)
Additive Manufacturing     Hybrid Journal   (Followers: 8, SJR: 1.039, h-index: 5)
Additives for Polymers     Full-text available via subscription   (Followers: 20)
Advanced Drug Delivery Reviews     Hybrid Journal   (Followers: 128, SJR: 5.2, h-index: 222)
Advanced Engineering Informatics     Hybrid Journal   (Followers: 11, SJR: 1.265, h-index: 53)
Advanced Powder Technology     Hybrid Journal   (Followers: 16, SJR: 0.739, h-index: 33)
Advances in Accounting     Hybrid Journal   (Followers: 9, SJR: 0.299, h-index: 15)
Advances in Agronomy     Full-text available via subscription   (Followers: 15, SJR: 2.071, h-index: 82)
Advances in Anesthesia     Full-text available via subscription   (Followers: 25, SJR: 0.169, h-index: 4)
Advances in Antiviral Drug Design     Full-text available via subscription   (Followers: 3)
Advances in Applied Mathematics     Full-text available via subscription   (Followers: 6, SJR: 1.054, h-index: 35)
Advances in Applied Mechanics     Full-text available via subscription   (Followers: 10, SJR: 0.801, h-index: 26)
Advances in Applied Microbiology     Full-text available via subscription   (Followers: 22, SJR: 1.286, h-index: 49)
Advances In Atomic, Molecular, and Optical Physics     Full-text available via subscription   (Followers: 16, SJR: 3.31, h-index: 42)
Advances in Biological Regulation     Hybrid Journal   (Followers: 4, SJR: 2.277, h-index: 43)
Advances in Botanical Research     Full-text available via subscription   (Followers: 3, SJR: 0.619, h-index: 48)
Advances in Cancer Research     Full-text available via subscription   (Followers: 25, SJR: 2.215, h-index: 78)
Advances in Carbohydrate Chemistry and Biochemistry     Full-text available via subscription   (Followers: 9, SJR: 0.9, h-index: 30)
Advances in Catalysis     Full-text available via subscription   (Followers: 5, SJR: 2.139, h-index: 42)
Advances in Cellular and Molecular Biology of Membranes and Organelles     Full-text available via subscription   (Followers: 12)
Advances in Chemical Engineering     Full-text available via subscription   (Followers: 24, SJR: 0.183, h-index: 23)
Advances in Child Development and Behavior     Full-text available via subscription   (Followers: 10, SJR: 0.665, h-index: 29)
Advances in Chronic Kidney Disease     Full-text available via subscription   (Followers: 10, SJR: 1.268, h-index: 45)
Advances in Clinical Chemistry     Full-text available via subscription   (Followers: 28, SJR: 0.938, h-index: 33)
Advances in Colloid and Interface Science     Full-text available via subscription   (Followers: 18, SJR: 2.314, h-index: 130)
Advances in Computers     Full-text available via subscription   (Followers: 16, SJR: 0.223, h-index: 22)
Advances in Developmental Biology     Full-text available via subscription   (Followers: 11)
Advances in Digestive Medicine     Open Access   (Followers: 4)
Advances in DNA Sequence-Specific Agents     Full-text available via subscription   (Followers: 5)
Advances in Drug Research     Full-text available via subscription   (Followers: 22)
Advances in Ecological Research     Full-text available via subscription   (Followers: 41, SJR: 3.25, h-index: 43)
Advances in Engineering Software     Hybrid Journal   (Followers: 25, SJR: 0.486, h-index: 10)
Advances in Experimental Biology     Full-text available via subscription   (Followers: 7)
Advances in Experimental Social Psychology     Full-text available via subscription   (Followers: 40, SJR: 5.465, h-index: 64)
Advances in Exploration Geophysics     Full-text available via subscription   (Followers: 3)
Advances in Fluorine Science     Full-text available via subscription   (Followers: 8)
Advances in Food and Nutrition Research     Full-text available via subscription   (Followers: 47, SJR: 0.674, h-index: 38)
Advances in Fuel Cells     Full-text available via subscription   (Followers: 15)
Advances in Genetics     Full-text available via subscription   (Followers: 15, SJR: 2.558, h-index: 54)
Advances in Genome Biology     Full-text available via subscription   (Followers: 11)
Advances in Geophysics     Full-text available via subscription   (Followers: 6, SJR: 2.325, h-index: 20)
Advances in Heat Transfer     Full-text available via subscription   (Followers: 21, SJR: 0.906, h-index: 24)
Advances in Heterocyclic Chemistry     Full-text available via subscription   (Followers: 8, SJR: 0.497, h-index: 31)
Advances in Human Factors/Ergonomics     Full-text available via subscription   (Followers: 25)
Advances in Imaging and Electron Physics     Full-text available via subscription   (Followers: 2, SJR: 0.396, h-index: 27)
Advances in Immunology     Full-text available via subscription   (Followers: 35, SJR: 4.152, h-index: 85)
Advances in Inorganic Chemistry     Full-text available via subscription   (Followers: 9, SJR: 1.132, h-index: 42)
Advances in Insect Physiology     Full-text available via subscription   (Followers: 3, SJR: 1.274, h-index: 27)
Advances in Integrative Medicine     Hybrid Journal   (Followers: 5)
Advances in Intl. Accounting     Full-text available via subscription   (Followers: 4)
Advances in Life Course Research     Hybrid Journal   (Followers: 8, SJR: 0.764, h-index: 15)
Advances in Lipobiology     Full-text available via subscription   (Followers: 2)
Advances in Magnetic and Optical Resonance     Full-text available via subscription   (Followers: 9)
Advances in Marine Biology     Full-text available via subscription   (Followers: 16, SJR: 1.645, h-index: 45)
Advances in Mathematics     Full-text available via subscription   (Followers: 10, SJR: 3.261, h-index: 65)
Advances in Medical Sciences     Hybrid Journal   (Followers: 6, SJR: 0.489, h-index: 25)
Advances in Medicinal Chemistry     Full-text available via subscription   (Followers: 5)
Advances in Microbial Physiology     Full-text available via subscription   (Followers: 4, SJR: 1.44, h-index: 51)
Advances in Molecular and Cell Biology     Full-text available via subscription   (Followers: 22)
Advances in Molecular and Cellular Endocrinology     Full-text available via subscription   (Followers: 10)
Advances in Molecular Toxicology     Full-text available via subscription   (Followers: 7, SJR: 0.324, h-index: 8)
Advances in Nanoporous Materials     Full-text available via subscription   (Followers: 4)
Advances in Oncobiology     Full-text available via subscription   (Followers: 3)
Advances in Organometallic Chemistry     Full-text available via subscription   (Followers: 15, SJR: 2.885, h-index: 45)
Advances in Parallel Computing     Full-text available via subscription   (Followers: 7, SJR: 0.148, h-index: 11)
Advances in Parasitology     Full-text available via subscription   (Followers: 7, SJR: 2.37, h-index: 73)
Advances in Pediatrics     Full-text available via subscription   (Followers: 24, SJR: 0.4, h-index: 28)
Advances in Pharmaceutical Sciences     Full-text available via subscription   (Followers: 13)
Advances in Pharmacology     Full-text available via subscription   (Followers: 15, SJR: 1.718, h-index: 58)
Advances in Physical Organic Chemistry     Full-text available via subscription   (Followers: 7, SJR: 0.384, h-index: 26)
Advances in Phytomedicine     Full-text available via subscription  
Advances in Planar Lipid Bilayers and Liposomes     Full-text available via subscription   (Followers: 3, SJR: 0.248, h-index: 11)
Advances in Plant Biochemistry and Molecular Biology     Full-text available via subscription   (Followers: 8)
Advances in Plant Pathology     Full-text available via subscription   (Followers: 5)
Advances in Porous Media     Full-text available via subscription   (Followers: 4)
Advances in Protein Chemistry     Full-text available via subscription   (Followers: 18)
Advances in Protein Chemistry and Structural Biology     Full-text available via subscription   (Followers: 19, SJR: 1.5, h-index: 62)
Advances in Psychology     Full-text available via subscription   (Followers: 60)
Advances in Quantum Chemistry     Full-text available via subscription   (Followers: 5, SJR: 0.478, h-index: 32)
Advances in Radiation Oncology     Open Access  
Advances in Small Animal Medicine and Surgery     Hybrid Journal   (Followers: 2, SJR: 0.1, h-index: 2)
Advances in Space Research     Full-text available via subscription   (Followers: 343, SJR: 0.606, h-index: 65)
Advances in Structural Biology     Full-text available via subscription   (Followers: 8)
Advances in Surgery     Full-text available via subscription   (Followers: 7, SJR: 0.823, h-index: 27)
Advances in the Study of Behavior     Full-text available via subscription   (Followers: 30, SJR: 1.321, h-index: 56)
Advances in Veterinary Medicine     Full-text available via subscription   (Followers: 15)
Advances in Veterinary Science and Comparative Medicine     Full-text available via subscription   (Followers: 13)
Advances in Virus Research     Full-text available via subscription   (Followers: 5, SJR: 1.878, h-index: 68)
Advances in Water Resources     Hybrid Journal   (Followers: 43, SJR: 2.408, h-index: 94)
Aeolian Research     Hybrid Journal   (Followers: 5, SJR: 0.973, h-index: 22)
Aerospace Science and Technology     Hybrid Journal   (Followers: 307, SJR: 0.816, h-index: 49)
AEU - Intl. J. of Electronics and Communications     Hybrid Journal   (Followers: 8, SJR: 0.318, h-index: 36)
African J. of Emergency Medicine     Open Access   (Followers: 5, SJR: 0.344, h-index: 6)
Ageing Research Reviews     Hybrid Journal   (Followers: 8, SJR: 3.289, h-index: 78)
Aggression and Violent Behavior     Hybrid Journal   (Followers: 405, SJR: 1.385, h-index: 72)
Agri Gene     Hybrid Journal  
Agricultural and Forest Meteorology     Hybrid Journal   (Followers: 15, SJR: 2.18, h-index: 116)
Agricultural Systems     Hybrid Journal   (Followers: 30, SJR: 1.275, h-index: 74)
Agricultural Water Management     Hybrid Journal   (Followers: 38, SJR: 1.546, h-index: 79)
Agriculture and Agricultural Science Procedia     Open Access  
Agriculture and Natural Resources     Open Access   (Followers: 1)
Agriculture, Ecosystems & Environment     Hybrid Journal   (Followers: 53, SJR: 1.879, h-index: 120)
Ain Shams Engineering J.     Open Access   (Followers: 5, SJR: 0.434, h-index: 14)
Air Medical J.     Hybrid Journal   (Followers: 5, SJR: 0.234, h-index: 18)
AKCE Intl. J. of Graphs and Combinatorics     Open Access   (SJR: 0.285, h-index: 3)
Alcohol     Hybrid Journal   (Followers: 9, SJR: 0.922, h-index: 66)
Alcoholism and Drug Addiction     Open Access   (Followers: 6)
Alergologia Polska : Polish J. of Allergology     Full-text available via subscription   (Followers: 1)
Alexandria Engineering J.     Open Access   (Followers: 1, SJR: 0.436, h-index: 12)
Alexandria J. of Medicine     Open Access  
Algal Research     Partially Free   (Followers: 8, SJR: 2.05, h-index: 20)
Alkaloids: Chemical and Biological Perspectives     Full-text available via subscription   (Followers: 3)
Allergologia et Immunopathologia     Full-text available via subscription   (Followers: 1, SJR: 0.46, h-index: 29)
Allergology Intl.     Open Access   (Followers: 4, SJR: 0.776, h-index: 35)
ALTER - European J. of Disability Research / Revue Européenne de Recherche sur le Handicap     Full-text available via subscription   (Followers: 7, SJR: 0.158, h-index: 9)
Alzheimer's & Dementia     Hybrid Journal   (Followers: 48, SJR: 4.289, h-index: 64)
Alzheimer's & Dementia: Diagnosis, Assessment & Disease Monitoring     Open Access   (Followers: 5)
Alzheimer's & Dementia: Translational Research & Clinical Interventions     Open Access   (Followers: 3)
American Heart J.     Hybrid Journal   (Followers: 48, SJR: 3.157, h-index: 153)
American J. of Cardiology     Hybrid Journal   (Followers: 45, SJR: 2.063, h-index: 186)
American J. of Emergency Medicine     Hybrid Journal   (Followers: 38, SJR: 0.574, h-index: 65)
American J. of Geriatric Pharmacotherapy     Full-text available via subscription   (Followers: 6, SJR: 1.091, h-index: 45)
American J. of Geriatric Psychiatry     Hybrid Journal   (Followers: 16, SJR: 1.653, h-index: 93)
American J. of Human Genetics     Hybrid Journal   (Followers: 31, SJR: 8.769, h-index: 256)
American J. of Infection Control     Hybrid Journal   (Followers: 24, SJR: 1.259, h-index: 81)
American J. of Kidney Diseases     Hybrid Journal   (Followers: 33, SJR: 2.313, h-index: 172)
American J. of Medicine     Hybrid Journal   (Followers: 46, SJR: 2.023, h-index: 189)
American J. of Medicine Supplements     Full-text available via subscription   (Followers: 3)
American J. of Obstetrics and Gynecology     Hybrid Journal   (Followers: 191, SJR: 2.255, h-index: 171)
American J. of Ophthalmology     Hybrid Journal   (Followers: 54, SJR: 2.803, h-index: 148)
American J. of Ophthalmology Case Reports     Open Access   (Followers: 3)
American J. of Orthodontics and Dentofacial Orthopedics     Full-text available via subscription   (Followers: 6, SJR: 1.249, h-index: 88)
American J. of Otolaryngology     Hybrid Journal   (Followers: 23, SJR: 0.59, h-index: 45)
American J. of Pathology     Hybrid Journal   (Followers: 26, SJR: 2.653, h-index: 228)
American J. of Preventive Medicine     Hybrid Journal   (Followers: 21, SJR: 2.764, h-index: 154)
American J. of Surgery     Hybrid Journal   (Followers: 34, SJR: 1.286, h-index: 125)
American J. of the Medical Sciences     Hybrid Journal   (Followers: 12, SJR: 0.653, h-index: 70)
Ampersand : An Intl. J. of General and Applied Linguistics     Open Access   (Followers: 5)
Anaerobe     Hybrid Journal   (Followers: 4, SJR: 1.066, h-index: 51)
Anaesthesia & Intensive Care Medicine     Full-text available via subscription   (Followers: 55, SJR: 0.124, h-index: 9)
Anaesthesia Critical Care & Pain Medicine     Full-text available via subscription   (Followers: 10)
Anales de Cirugia Vascular     Full-text available via subscription  
Anales de Pediatría     Full-text available via subscription   (Followers: 2, SJR: 0.209, h-index: 27)
Anales de Pediatría (English Edition)     Full-text available via subscription  
Anales de Pediatría Continuada     Full-text available via subscription   (SJR: 0.104, h-index: 3)
Analytic Methods in Accident Research     Hybrid Journal   (Followers: 2, SJR: 2.577, h-index: 7)
Analytica Chimica Acta     Hybrid Journal   (Followers: 38, SJR: 1.548, h-index: 152)
Analytical Biochemistry     Hybrid Journal   (Followers: 162, SJR: 0.725, h-index: 154)
Analytical Chemistry Research     Open Access   (Followers: 8, SJR: 0.18, h-index: 2)
Analytical Spectroscopy Library     Full-text available via subscription   (Followers: 11)
Anesthésie & Réanimation     Full-text available via subscription   (Followers: 1)
Anesthesiology Clinics     Full-text available via subscription   (Followers: 22, SJR: 0.421, h-index: 40)
Angiología     Full-text available via subscription   (SJR: 0.124, h-index: 9)
Angiologia e Cirurgia Vascular     Open Access  
Animal Behaviour     Hybrid Journal   (Followers: 157, SJR: 1.907, h-index: 126)
Animal Feed Science and Technology     Hybrid Journal   (Followers: 5, SJR: 1.151, h-index: 83)
Animal Reproduction Science     Hybrid Journal   (Followers: 5, SJR: 0.711, h-index: 78)
Annales d'Endocrinologie     Full-text available via subscription   (Followers: 1, SJR: 0.394, h-index: 30)
Annales d'Urologie     Full-text available via subscription  
Annales de Cardiologie et d'Angéiologie     Full-text available via subscription   (SJR: 0.177, h-index: 13)
Annales de Chirurgie de la Main et du Membre Supérieur     Full-text available via subscription  
Annales de Chirurgie Plastique Esthétique     Full-text available via subscription   (Followers: 2, SJR: 0.354, h-index: 22)
Annales de Chirurgie Vasculaire     Full-text available via subscription   (Followers: 1)

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Journal Cover Advances in Organometallic Chemistry
  [SJR: 2.885]   [H-I: 45]   [15 followers]  Follow
    
   Full-text available via subscription Subscription journal
   ISSN (Print) 0065-3055
   Published by Elsevier Homepage  [3043 journals]
  • Carbon–Nitrogen Bond Formation Through Cross-Dehydrogenative
           Coupling Reactions
    • Authors: Mattijs Baeten; Bert U.W. Maes
      Abstract: Publication date: Available online 1 June 2017
      Source:Advances in Organometallic Chemistry
      Author(s): Mattijs Baeten, Bert U.W. Maes
      There are many methods available in the synthetic toolbox to construct carbon–nitrogen bonds, but these standardly require preactivation of the substrate. These involve classical, nonmetal catalyzed methods (e.g., nucleophilic substitutions) and catalytic methods (e.g., the Ullmann condensation reaction) as well as modern metal-catalyzed approaches with wide scope (Buchwald–Hartwig reaction, hydrogen-borrowing reactions). Cross-dehydrogenative couplings (CDCs) couple a C–H with an N–H bond and do not require any preactivation and are therefore considered the “nec plus ultra” in amination chemistry. Based on the ubiquitous nature of C–H bonds in substrates and the wide availability of amines as reactants they inherently show great application potential. Especially from a sustainable chemistry point of view it holds great promise, provided green oxidants can be used in a safe manner. However, though major advances have been made in the field, this last addition to the carbon–nitrogen bond forming toolbox is still in its infancy. The major investigations and advances dealing with CDCs for C–N bond formation since 2014 are summarized in this review. Intra- and intermolecular direct oxidative amination reactions on C(sp2)–H as well as C(sp3)–H bonds are included. Both metal-catalyzed and metal-free approaches are covered, as well as the corresponding mechanistic proposals.

      PubDate: 2017-06-02T18:24:12Z
      DOI: 10.1016/bs.adomc.2017.04.003
       
  • Group 6 Metal Fischer Carbene Complexes: Versatile Synthetic Building
           Blocks
    • Authors: José Barluenga; Enrique Aguilar
      Abstract: Publication date: Available online 23 May 2017
      Source:Advances in Organometallic Chemistry
      Author(s): José Barluenga, Enrique Aguilar
      Group 6 metal Fischer carbene complexes are extremely versatile organometallic reagents in organic synthesis. This chapter provides an overview of their chemistry and updates the main results in the field. In the initial sections the strategies employed to prepare them are described, followed by the methods developed to remove the metal moiety. Next, their chemical behavior is analyzed from a synthetic perspective, beginning with the reactivity of alkyl carbene complexes, and also introducing those reactions where only the carbene carbon is involved. Then, the chemistry of alkenyl and aryl, and alkynyl carbene complexes is successively discussed. A final section is dedicated to the synthesis and reactivity of nonheteroatom-stabilized carbene complexes.

      PubDate: 2017-05-27T18:09:08Z
      DOI: 10.1016/bs.adomc.2017.04.001
       
  • Oxidative Functionalization of Late Transition Metal–Carbon Bond
    • Authors: Anna V. Sberegaeva; David Watts; Andrei N. Vedernikov
      Abstract: Publication date: Available online 15 May 2017
      Source:Advances in Organometallic Chemistry
      Author(s): Anna V. Sberegaeva, David Watts, Andrei N. Vedernikov
      Oxidative functionalization of transition metal–carbon bonds is involved in the variety of existing methods of organic synthesis that employ organotransition metal compounds as stoichiometric reagents or catalytic intermediates. Over the last two decades a number of new directions have emerged in this area of chemistry. The new developments focus, in particular, on the utilization of high-valent organotransition metal complexes and the metals of the 3d block. In this chapter, oxidative functionalization of late transition metal–carbon bonds is reviewed with the emphasis on the major achievements in this field over the last two decades. The metals included in this review are rhenium and all groups 8, 9, 10, and 11 elements. The material is organized according to the metal, the type of the attached hydrocarbyl group, and the nature of the new C–X bond formed. When mechanistic information is available, a brief mechanistic analysis is also provided.

      PubDate: 2017-05-17T22:46:50Z
      DOI: 10.1016/bs.adomc.2017.03.001
       
  • Biaryl Synthesis via C–H Bond Activation: Strategies and Methods
    • Authors: Marco Simonetti; Diego M. Cannas; Igor Larrosa
      Abstract: Publication date: Available online 11 May 2017
      Source:Advances in Organometallic Chemistry
      Author(s): Marco Simonetti, Diego M. Cannas, Igor Larrosa
      The biaryl unit is a recurrent building block in numerous compounds that have profoundly changed many aspects of the modern era. As a structural component in drugs, agrochemicals, and materials, the biaryl moiety is a highly desirable synthetic target for both industry and academia. In recent years, transition metal-catalyzed C–H arylation methodologies for the construction of the biaryl skeleton have been acknowledged as a sustainable alternative to traditional cross-coupling reactions. The aim of this review is to offer a general overview on the most successful strategies for the formation of CAr–CAr bonds in this rapidly evolving field. Particular emphasis on the mechanistic implications governing both selectivity and reactivity will be provided, where appropriate.

      PubDate: 2017-05-12T22:04:22Z
      DOI: 10.1016/bs.adomc.2017.03.002
       
  • Recent Advances in Transition-Metal-Catalyzed Cross-Coupling Reactions
           With N-Tosylhydrazones
    • Authors: Di Qiu; Fanyang Mo; Yan Zhang; Jianbo Wang
      Abstract: Publication date: Available online 8 May 2017
      Source:Advances in Organometallic Chemistry
      Author(s): Di Qiu, Fanyang Mo, Yan Zhang, Jianbo Wang
      Transition-metal-catalyzed cross-coupling reactions have experienced considerable growth in the past decades. These reactions have proved to be powerful tools for assembling structurally complex molecules for use in applications ranging from medicines to materials. Among these transformations, catalytic coupling reactions of readily available substrates of N-tosylhydrazones, which can be conveniently accessed by the condensation of carbonyl compounds with N-tosylhydrazine, have provided a novel and superior avenue toward the syntheses of functionalized molecules and efficient construction of carbon–carbon and carbon–heteroatom bonds. As particular examples, this coupling strategy from N-tosylhydrazones as substrates enables the concise preparation of substituted alkenes as well as various heterocycle scaffolds. Transition-metal-catalyzed carbene-coupling reactions not only introduce the cross-coupling strategy in carbene chemistry, but more importantly, it represents a paradigm shift in the area. Therefore, for this approach to be generally useful the exploration of stable and effective carbene precursors has become a crucial topic. As stable and easily accessible surrogates for diazo compounds, N-tosylhydrazones can generate diazo intermediates in situ in the presence of a base. It is worth noting that this process is regarded as a diazo compound slow-release methodology, which suppresses the self-coupling of diazo groups, thus greatly benefiting the reaction (vide infra). By employing N-tosylhydrazones as the available reaction partners, transition-metal-catalyzed carbene-coupling reactions demonstrate practical and convenient usefulness in synthetic chemistry and other fields. This chapter aims to describe the recent advances of transition-metal-catalyzed cross-coupling reactions with N-tosylhydrazones, especially those involving migratory insertion of a metal-carbene intermediate. In this content, we will introduce these transformations according to different transition-metal catalysts, demonstrating the superiority and generality of N-tosylhydrazones as novel cross-coupling partners in transition-metal-catalyzed cross-coupling reactions.

      PubDate: 2017-05-12T22:04:22Z
      DOI: 10.1016/bs.adomc.2017.04.002
       
  • Recent Advances in Asymmetric Metal-Catalyzed Carbene Transfer from Diazo
           Compounds Toward Molecular Complexity
    • Authors: N.J. Thumar; Q.H. Wei; W.H. Hu
      Abstract: Publication date: Available online 6 October 2016
      Source:Advances in Organometallic Chemistry
      Author(s): N.J. Thumar, Q.H. Wei, W.H. Hu
      The discovery of novel organic transformations via metal-carbene intermediates, generated by metal-catalyzed decomposition of diazo compounds, has become an important method to obtain complex molecules with high degrees of chemo-, regio-, diastereo-, and enantioselectivity. This methodology has provided a series of transformations such as cyclopropanation, cyclopropenation, C–H and heteroatom–hydrogen insertions, ylide formation and its subsequent Wolff rearrangement, 1,2-migration, dimerization, olefination, oligomerization, polymerization, and cross-coupling reactions. In this review, we focused on the most recent advances in synthetic transformations of diazo-based metal-carbene chemistry since 2011 with particular emphasis in their use with complex substrates.

      PubDate: 2016-10-16T06:57:52Z
      DOI: 10.1016/bs.adomc.2016.08.002
       
  • Transition Metal Alkane-Sigma Complexes: Synthesis, Characterization, and
           Reactivity
    • Authors: A.S. Weller; F.M. Chadwick; A.I. McKay
      Abstract: Publication date: Available online 5 October 2016
      Source:Advances in Organometallic Chemistry
      Author(s): A.S. Weller, F.M. Chadwick, A.I. McKay
      Although transient and difficult to observe, well-defined σ-alkane complexes are now becoming established due to the developments in characterization techniques alongside synthetic methodologies that allow for their observation. Although the number of such complexes still remains relatively small compared to other σ-complexes, such as those with dihydrogen, their growing number and diversity promises much for the future in terms of the development of their fundamental structure and bonding and their role in selective C–H bond activation and functionalization. In this perspective review, the synthesis and characterization of σ-alkane complexes are presented, and the onward reactivity of relatively well-defined examples discussed, with the emphasis on recent results.

      PubDate: 2016-10-16T06:57:52Z
      DOI: 10.1016/bs.adomc.2016.09.001
       
  • Copper(I)–Acetylides: Access, Structure, and Relevance in Catalysis
    • Abstract: Publication date: Available online 28 September 2016
      Source:Advances in Organometallic Chemistry
      Author(s): S. Díez-González
      The most current applications of copper(I)-mediated reactions of alkynes involving copper(I)–acetylide are presented. This review focuses on the mechanistic understanding of these transformations and the effect of the metal acetylides in the reaction pathways.

      PubDate: 2016-10-16T06:57:52Z
       
  • Phenol Derivatives: Modern Electrophiles in Cross-Coupling Reactions
    • Authors: C. Zarate; M. van Gemmeren; R.J. Somerville; R. Martin
      Abstract: Publication date: Available online 15 September 2016
      Source:Advances in Organometallic Chemistry
      Author(s): C. Zarate, M. van Gemmeren, R.J. Somerville, R. Martin
      In recent years, C–O electrophiles have emerged as powerful alternatives to organic halides, common counterparts in metal-catalyzed cross-coupling reactions. Among their advantages are their low toxicity, ready availability, the natural abundance of phenols, and their pivotal role as synthons in organic synthesis, which makes them particularly attractive vehicles for further functionalization. This review summarizes the most important developments in cross-coupling reactions via catalytic C–O bond activation of particularly unreactive aryl esters, carbamates, and aryl ethers, providing a general overview of the current state of the art and including mechanistic implications as well as future aspects, when appropriate.

      PubDate: 2016-10-16T06:57:52Z
      DOI: 10.1016/bs.adomc.2016.07.001
       
  • The Selection of Catalysts for Metal Carbene Transformations
    • Authors: Q.-Q. Cheng; M.P. Doyle
      Abstract: Publication date: Available online 29 August 2016
      Source:Advances in Organometallic Chemistry
      Author(s): Q.-Q. Cheng, M.P. Doyle
      A selective survey of the literature since 2013 that includes novel catalytic strategies and transformations involving electrophilic metal carbene intermediates is presented. This review is organized according to donor and acceptor substituents of the carbene precursor and provides an overview of the rapidly expanding field of electrophilic metal carbene generation and reactions. New developments in catalyst and ligand design, the expanded uses of diazo compounds, and the profusion of transformations are presented. The rapid expansion in applications of electrophilic metal carbenes from cyclopropanation and C–H insertion to cycloaddition and reactions of carbene-generated ylides are among the highlighted developments that are discussed.

      PubDate: 2016-10-16T06:57:52Z
      DOI: 10.1016/bs.adomc.2016.07.002
       
  • Lithium, Sodium, and Potassium Magnesiate Chemistry: A Structural Overview
    • Authors: A.J. C.T.
      Abstract: Publication date: Available online 21 March 2016
      Source:Advances in Organometallic Chemistry
      Author(s): A.J. Martínez-Martínez, C.T. O’Hara
      Until recently, deprotonative metalation reactions have been performed using organometallic compounds that contain only a single metal (eg, organolithium reagents). Since the turn of the millennium, bimetallic compounds such as alkali metal magnesiates have begun to emerge as a new class of complementary metalating reagents. These have many benefits over traditional lithium compounds, including their enhanced stability at ambient temperatures, their tolerance of reactive functional groups and their stability in common reaction solvents. In recent years, lots of attention has been focused on understanding the structure of alkali metal magnesiates in an effort to maximize synthetic efficiency and thus shed insight into approaches for future rational design. In this chapter, the diverse structural chemistry of alkali metal magnesiate compounds reported since 2007 will be summarized.

      PubDate: 2016-04-10T16:59:17Z
       
  • Dearomatization of Transition Metal-Coordinated N-Heterocyclic Ligands and
           Related Chemistry
    • Authors: R. Arévalo; M. Espinal-Viguri; M.A. Huertos; J. Pérez; L. Riera
      Pages: 47 - 114
      Abstract: Publication date: Available online 16 April 2016
      Source:Advances in Organometallic Chemistry
      Author(s): R. Arévalo, M. Espinal-Viguri, M.A. Huertos, J. Pérez, L. Riera
      2,2′-Bipyridine (bipy) and 1,10-phenanthroline (phen), employed for a long time in all areas of coordination chemistry, are archetypical auxiliary ligands that stabilize metal fragments but are not themselves the site of the reactivity. Several examples of dearomatization of one of the pyridine rings of coordinated bipy and phen are discussed, including one example of ring opening. The highly reactive species resulting from deprotonation of coordinated N-alkylimidazoles can result, besides of the mentioned dearomatization, in other intramolecular C–C coupling reactions involving monodentate pyridines, other N-alkylimidazoles, imine, nitrile, isonitrile, and carbonyl ligands. In some examples, the products of these couplings, and of those between two pyridines, can be oxidatively rearomatized, affording pyridylimidazoles and bipyridines. Similar reactions leading to C–C couplings have been demonstrated for deprotonation of dimethylsulfide and methylphosphane ligands. In some instances, the deprotonation of coordinated N-alkylimidazoles produces complexes with rare N-alkylimidazol-2-yl ligands. The protonation or alkylation of the nonsubstituted nitrogen of the latter affords coordinated N-heterocyclic carbenes.

      PubDate: 2016-04-20T18:12:43Z
      DOI: 10.1016/bs.adomc.2016.03.002
       
  • Insight into Metal-Catalyzed Water Oxidation from a DFT Perspective
    • Authors: D. Balcells
      Pages: 115 - 173
      Abstract: Publication date: Available online 16 February 2016
      Source:Advances in Organometallic Chemistry
      Author(s): David Balcells
      Computational studies, mostly based on density functional theory calculations, have provided useful insight into the structure and reactivity properties of the molecular catalysts used for splitting water. These include the oxidation potentials in the generation of the active species, the thermodynamic and kinetic parameters of the rate-determining O–O bond formation step, and the spectroscopic properties of the key intermediates. The future development of this field, which is limited to some extent by the current limitations of the theoretical methods available, shall focus on the determination of the side reactions deactivating the catalyst and the accurate prediction of the parameters controlling spin crossover. Through close collaborations with experimental groups, this will contribute to the development of new water oxidation catalysts with higher levels of activity and robustness.

      PubDate: 2016-04-10T16:59:17Z
      DOI: 10.1016/bs.adomc.2016.01.001
       
  • Golden Jubilee for Scorpionates: Recent Advances in Organometallic
           Chemistry and Their Role in Catalysis
    • Authors: C. Pettinari; R. Pettinari; F. Marchetti
      Pages: 175 - 260
      Abstract: Publication date: Available online 2 March 2016
      Source:Advances in Organometallic Chemistry
      Author(s): C. Pettinari, R. Pettinari, F. Marchetti
      This review aims to describe some recent trends in organometallic complexes containing scorpionate ligands. Particular attention will be paid to the ligands structure, reagents, and methods developed during the past decade and contextualize them within the broad field of organometallic chemistry. In fact, novel ligand design has itself become a fundamental part of most organometallic researches and many catalytic conversions have been attained by subtle modification of the metal environment through a careful choice of the ancillary ligands. This review, which is necessarily limited in scope, reports the organometallic complexes with azolylborate and azolylalkane ligands from 2008 until today and it is organized according to the metal center.

      PubDate: 2016-04-10T16:59:17Z
      DOI: 10.1016/bs.adomc.2016.01.002
       
  • Recent Advances in Transition Metal-Catalyzed Dinitrogen Activation
    • Authors: M.D. Walter
      Pages: 261 - 377
      Abstract: Publication date: Available online 8 April 2016
      Source:Advances in Organometallic Chemistry
      Author(s): M.D. Walter
      The activation and functionalization of N2 is certainly one of the most challenging reactions for molecular chemists. In industry N2 and H2 are converted into NH3 by heterogeneous catalysts under harsh reaction conditions, whereas biology accomplishes the formation of NH3 under ambient conditions. This has inspired many chemists to pursue this goal using molecular (homogeneous) catalysts. In the past two decades, tremendous progress has been made and in the course of these studies new reactivity patterns have emerged and new ligand design strategies have been developed. Furthermore, first steps to incorporate dinitrogen as an earth abundant feedstock into value-added organic molecules have been taken. This review is intended to summarize some of the most relevant contributions to this area and also to present the latest developments in dinitrogen rare-earth and actinide chemistry.

      PubDate: 2016-04-10T16:59:17Z
      DOI: 10.1016/bs.adomc.2016.03.001
       
  • CH Bond Activation of Hydrocarbons Mediated by Rare-Earth Metals and
           Actinides: Beyond σ-Bond Metathesis and 1,2-Addition
    • Authors: Wenliang Huang; Paula Diaconescu
      Abstract: Publication date: Available online 14 September 2015
      Source:Advances in Organometallic Chemistry
      Author(s): Wenliang Huang, Paula L. Diaconescu
      This review discusses CH bond activation of hydrocarbons mediated by rare-earth metal complexes with an emphasis on type of mechanisms. The review is organized as follows: in the first part, CH bond activations mediated by rare-earth metals and actinides following traditional reaction pathways, such as σ-bond metathesis and 1,2-addition, are summarized; in the second part, nontraditional CH bond activation examples are discussed in detail in order to understand the underlying mechanisms. The scope of the review is limited to rare-earth metals and actinides, but, in some cases, closely related reactivity of group 4 metals will be included for comparison. The purpose of the review is not only to provide a brief overview of CH bond activation by f-elements but also to bring to attention unusual CH bond cleavage reactivity following mechanisms different than σ-bond metathesis and 1,2-addition.

      PubDate: 2015-09-16T09:57:04Z
       
  • Transition Metal-Catalyzed Functionalization of Polyolefins Containing CC,
           CC, and CH Bonds
    • Authors: Angela D. Mohanty; Chulsung Bae
      Pages: 1 - 39
      Abstract: Publication date: Available online 11 September 2015
      Source:Advances in Organometallic Chemistry
      Author(s): Angela D. Mohanty, Chulsung Bae
      Due to good processability and low production cost, polyolefins are the most widely used synthetic polymers in the world. Since polyolefins are primarily composed of nonpolar CC, CC, and CH bonds, the lack of polar groups in the polymer chains unfortunately causes poor interactions with other polymers and this disadvantage has restricted broader applications of polyolefins so far. Chemical modification of polyolefins via selective and controlled functionalization can offer attractive approach for incorporation of polar functionality to the inherently nonpolar materials and changing specific properties. However, traditional polyolefin functionalization via free radical- and carbocation-mediated reactions frequently causes chain degradation and cross-linking (e.g., gel formation), thus affecting molecular weights and mechanical properties of the resulting polymers. During recent decades, we have witnessed tremendous advances in transition metal-catalyzed organic reactions which can be potentially explored for controlled functionalization of polyolefins under mild conditions. Some of these catalytic polymer modification processes have already demonstrated great potential for synthesis of novel functional polymers using easily available low-cost polymers as a starting material. In this review article, we will summarize recent progress of polyolefin functionalization catalyzed by transition metal complexes.

      PubDate: 2015-09-11T09:20:42Z
      DOI: 10.1016/bs.adomc.2015.08.002
       
  • Coordination and Activation of EH Bonds (E=B, Al, Ga) at Transition Metal
           Centers
    • Authors: Ian M. Riddlestone; Joseph A.B. Abdalla; Simon Aldridge
      Pages: 1 - 38
      Abstract: Publication date: Available online 5 May 2015
      Source:Advances in Organometallic Chemistry
      Author(s): Ian M. Riddlestone , Joseph A.B. Abdalla , Simon Aldridge
      Developments in the coordination chemistry of BH, AlH, and GaH bonds at transition metal centers are reviewed, with particular emphasis on factors influencing electronic/geometric structure and bond activation.

      PubDate: 2015-05-05T17:16:47Z
      DOI: 10.1016/bs.adomc.2015.02.003
       
  • Singular Metal Activation of Diboron Compounds
    • Authors: Stephen A. Westcott; Elena Fernández
      Pages: 39 - 89
      Abstract: Publication date: Available online 5 May 2015
      Source:Advances in Organometallic Chemistry
      Author(s): Stephen A. Westcott , Elena Fernández
      Organoboron compounds are part of many synthetic routes and target compounds for bio- and medicinal applications. One origin for their preparation was by means of direct interaction between Cl2B–BCl2 and unsaturated organic compounds, but progress toward simple and convenient diboron reagents put tetra(alkoxy)diborons in the spotlight. The less reactive BB bond in tetra(alkoxy)diborons requires transition metal complexes to activate the diboron and transfer the boryl units to unsaturated substrates. Importantly, the mode of activation differs from the metal involved and is also influenced by the ligands modifying the metal center. Oxidative addition and σ-bond metathesis are the most representative modes of activation, and metal complexes become catalytic systems by completing the substrate transformation into the desired organoboron compound. Selectivity is a fundamental issue in the activation and precise delivery of the boryl moiety to the unsaturated substrate. Particularly, asymmetric induction is accomplished by the enantioselective influence of the chiral ligands around the metal centers. Even nanoparticles are known to activate diboron reagents and provide chemoselective diboration processes. The power of diboron reagents in organoboron synthesis is pushing the search of new activation modes, and nowadays, the sole presence of Lewis bases can also play a definitive role to generate Lewis acid–base adducts that directly interact with unsaturated substrates in a fashionable way. Each situation requires the use of the appropriate mode of activation of diboron reagents, and here we collect these singular metal activation modes and analyze their advantages and limitations.

      PubDate: 2015-05-05T17:16:47Z
      DOI: 10.1016/bs.adomc.2015.02.001
       
  • Dirhodium(II)-Catalyzed C(sp3)–H Amination Using Iodine(III)
           Oxidants
    • Authors: Julien Buendia; Gwendal Grelier; Philippe Dauban
      Pages: 77 - 118
      Abstract: Publication date: Available online 11 September 2015
      Source:Advances in Organometallic Chemistry
      Author(s): Julien Buendia, Gwendal Grelier, Philippe Dauban
      The ubiquity of nitrogen in life and material sciences makes the search for CN bond-forming reactions a topic of paramount importance in organic chemistry. The direct transition metal-catalyzed amination of C(sp3)–H bonds, in this context, is a unique strategy that streamlines the synthesis of amines and explores a new chemical space. Efficient methods have been reported through the application of catalytic nitrene transfers in the presence of hypervalent iodine reagents. These transformations are promoted by ruthenium(II), iron(II), copper(I), or silver(I) species. However, dirhodium(II) tetracarboxylate complexes with their paddlewheel structure, so far, remain the most efficient and versatile catalysts for the oxidative addition of electrophilic nitrenes to C(sp3)–H bonds. Pioneered by the groups of Breslow and Müller, the dirhodium(II)-catalyzed C(sp3)–H amination with iminoiodinanes has been extensively investigated in the last 15 years. Combined, these studies have brought this reaction to a high level of sophistication through the design of ligands and nitrene precursors. Intra- and intermolecular reactions proceed with excellent chemo- and stereoselectivity to afford various types of amines in very good yields. Both are useful synthetic tools that are increasingly applied in synthesis. The challenging issues of the mechanism and the enantioselectivity, however, still remain to be addressed for the dirhodium(II)-catalyzed C(sp3)–H amination.

      PubDate: 2015-09-11T09:20:42Z
      DOI: 10.1016/bs.adomc.2015.08.001
       
  • Catalytic Oxidation of Alcohols: Recent Advances
    • Authors: Maximilian N. Kopylovich; Ana P.C. Ribeiro; Elisabete C.B.A. Alegria; Nuno M.R. Martins; Luísa M.D.R.S. Martins; Armando J.L. Pombeiro
      Pages: 91 - 174
      Abstract: Publication date: Available online 5 May 2015
      Source:Advances in Organometallic Chemistry
      Author(s): Maximilian N. Kopylovich , Ana P.C. Ribeiro , Elisabete C.B.A. Alegria , Nuno M.R. Martins , Luísa M.D.R.S. Martins , Armando J.L. Pombeiro
      This review concerns metal-catalyzed reactions of oxidation of alcohols to the respective products, mainly ketones and aldehydes, mostly within the period of 2010–2014. Both conventional and unconventional systems, not only with usual reagents, but also with uncommon and prospective ones, are overviewed, with recently achieved developments.

      PubDate: 2015-05-05T17:16:47Z
      DOI: 10.1016/bs.adomc.2015.02.004
       
  • Acrylates from Alkenes and CO2, the Stuff That Dreams Are Made of
    • Authors: Michael Limbach
      Pages: 175 - 202
      Abstract: Publication date: Available online 9 May 2015
      Source:Advances in Organometallic Chemistry
      Author(s): Michael Limbach
      For more than three decades, the catalytic synthesis of acrylates from the cheap and abundantly available C1 building block CO2 and alkenes has been an unsolved problem in catalysis research, both in academia and industry. Acrylates and their downstream products are ubiquitous in daily life as hygiene products, coatings, adhesives, or plastics, etc., and they are manufactured globally on a multimillion ton level. Thus, a CO2-based route to such world-scale chemicals is economically most attractive, but, due to thermodynamic and kinetic hurdles, also highly challenging. Since the revolutionary work of Hoberg et al., metallalactones are discussed as possible intermediates in a catalytic cycle, but the reaction has not been existing until recently. Herein, we present our and others’ efforts on the development of a homogeneous catalyst that permits the catalytic synthesis of salts of α,β-unsaturated acids from CO2, alkenes, and a base. As this turned out to be difficult without a deeper mechanistic understanding, we highlight most recent mechanistic findings and also elaborate on unproductive reaction pathways.

      PubDate: 2015-05-10T17:52:31Z
      DOI: 10.1016/bs.adomc.2015.03.001
       
  • Poly-NHC Complexes of Transition Metals: Recent Applications and New
           Trends
    • Authors: Andrea Biffis; Marco Baron; Cristina Tubaro
      Pages: 203 - 288
      Abstract: Publication date: Available online 5 May 2015
      Source:Advances in Organometallic Chemistry
      Author(s): Andrea Biffis , Marco Baron , Cristina Tubaro
      The most significant recent developments in the chemistry of transition metal complexes with poly-N-heterocyclic carbene ligands (poly-NHCs) are reviewed herein. In particular, attention is focussed on the preparation of novel poly-NHCs, on their coordination chemistry toward transition metal centers, and on the applications of the resulting complexes, which nowadays range from catalysis to photophysics and medicinal chemistry. The goal is to highlight the most important recent achievements in this complex field and to give to the reader an overview on the broad chemistry of these compounds.

      PubDate: 2015-05-05T17:16:47Z
      DOI: 10.1016/bs.adomc.2015.02.002
       
  • Chapter One Palladium-Mediated Organofluorine Chemistry
    • Authors: Ana C. Albéniz; Juan A. Casares
      Pages: 1 - 110
      Abstract: Publication date: 2014
      Source:Advances in Organometallic Chemistry, Volume 62
      Author(s): Ana C. Albéniz , Juan A. Casares
      The importance of organofluorine compounds in pharmaceuticals and agrochemicals has encouraged the study of their synthesis since the middle of the twentieth century. In recent years, there has been a huge increase in the work devoted to improve the use of transition metals as catalysts for the formation of CF bonds and its activation, and also to the development of fluoroalkylation and fluoroarylation reactions. Palladium complexes, as undisputed protagonists in the catalyzed reactions for the formation of CC or Cheteroatom bonds, have been employed for these reactions. However, the particular properties of fluorine and fluorinated hydrocarbons do not allow a straightforward translation of the palladium-catalyzed methodologies. This chapter provides an overview of the progress in palladium-catalyzed synthesis of organofluorinated compounds. It also accounts for those studies on the reactivity of palladium complexes bearing fluoride or fluorinated groups that allow to rationalize why some catalysts are effective and why some others are not. Although progress in the understanding of these chemical systems has been enormous in recent years, many aspects of their reactivity are still poorly understood, so, predictably, the field will remain an active focus of research in coming years.

      PubDate: 2014-10-03T19:20:58Z
      DOI: 10.1016/b978-0-12-800976-5.00001-1
      Issue No: Vol. 62 (2014)
       
  • Chapter Three Synthesis and Applications in Catalysis of Metal Complexes
           with Chelating Phosphinosulfonate Ligands
    • Authors: Fan Jiang; Mathieu Achard; Christian Bruneau
      Pages: 159 - 218
      Abstract: Publication date: 2014
      Source:Advances in Organometallic Chemistry, Volume 62
      Author(s): Fan Jiang , Mathieu Achard , Christian Bruneau
      Preparations of various types of chelating sulfonates preligands are reported. They include achiral and optically active phosphinosulfonate and imidazolium sulfonate zwitterionic species. Their coordination to transition metals forming the corresponding chelate complexes with palladium, nickel, platinum, rhodium, iridium, and ruthenium is described. Applications of the well-defined complexes of palladium, ruthenium, iridium, and rhodium, as well as in situ-generated copper derivatives in homogeneous catalysis for fine chemistry and polymerization complete this chapter.

      PubDate: 2014-10-03T19:20:58Z
      DOI: 10.1016/b978-0-12-800976-5.00003-5
      Issue No: Vol. 62 (2014)
       
  • Chapter Four The Mannich Route to Amino-Functionalized [3]Ferrocenophanes
    • Authors: Annika Stute; Gerald Kehr; Gerhard Erker
      Pages: 219 - 259
      Abstract: Publication date: 2014
      Source:Advances in Organometallic Chemistry, Volume 62
      Author(s): Annika Stute , Gerald Kehr , Gerhard Erker
      1,1′-Diacetylferrocene readily undergoes an intramolecular Mannich condensation reaction upon treatment with excess dimethylamine in the presence of catalytic amounts of titanium tetrachloride to yield the unsaturated dimethylamino [3]ferrocenophane system 12a. Several other secondary amines also undergo this reaction. Catalytic hydrogenation of the conjugated dienamine unit in 12a gives the saturated dimethylamino [3]ferrocenophane 13a. The major trans-13a product was used for a great variety of reactions at the [3]ferrocenophane framework, including the preparation of enantiomerically pure analogues and derivatives. These readily available compounds have found a wide spread application—ligand synthesis and catalysis, in bioorganometallic chemistry and in the new emerging field of frustrated Lewis pair chemistry.

      PubDate: 2014-10-03T19:20:58Z
      DOI: 10.1016/b978-0-12-800976-5.00004-7
      Issue No: Vol. 62 (2014)
       
  • Chapter Five Organometallic Intermediates of Gold Catalysis
    • Authors: Tobias Lauterbach; Abdullah Mohamed Asiri; A. Stephen K. Hashmi
      Pages: 261 - 297
      Abstract: Publication date: 2014
      Source:Advances in Organometallic Chemistry, Volume 62
      Author(s): Tobias Lauterbach , Abdullah Mohamed Asiri , A. Stephen K. Hashmi
      This review summarizes the isolated organometallic compounds which represent analogues of intermediates of homogeneous gold-catalyzed organic reactions or authentic intermediates isolated under specific reaction conditions preventing a full turnover of the catalytic cycle. This covers π-complexes of gold with coordinated alkenes, arenes, allenes, and alkynes. But also subsequent intermediates of typical catalytic cycles like vinylgold complexes, alkylgold complexes, and gold hydrides. The geminal diaurated complexes, which in the context of dual gold catalysis became an important topic again, and gold carbenoids represent another subject. Both the oxidation states gold(I) and gold(III) are included.

      PubDate: 2014-10-03T19:20:58Z
      DOI: 10.1016/b978-0-12-800976-5.00005-9
      Issue No: Vol. 62 (2014)
       
  • Chapter Two Normal and Abnormal N-Heterocyclic Carbene Ligands
           Similarities and Differences of Mesoionic C–Donor Complexes
    • Authors: Martin Albrecht
      Abstract: Publication date: 2014
      Source:Advances in Organometallic Chemistry, Volume 62
      Author(s): Martin Albrecht
      Similarities and differences of normal versus abnormal carbene complexes are highlighted, with an emphasis on effects that can be directly attributed to the different bonding mode and which are thus not imparted by potential stereoelectronic effects such as more or less shielding of the MC bond. While generally, the bonding scheme is similar throughout all classes of carbenes, distinctly different behaviors have been noted in some reactivity patterns, in particular when comparing different bonding modes of imidazolylidenes. This distinction is blurred with triazolylidenes, and the normal/abnormal nomenclature is not particularly meaningful in these cases. With pyridylidenes, structural differences are noted in the ground state, while reactivity patterns are not significantly dependent on the metal binding site. Common denominators for all normal and abnormal heterocyclic carbene complexes include (i) a strongly mesoionic character of both normal and abnormal bonding modes of the ligand, and (ii) a negligibly small carbenic character. Accordingly “carbene” is a rather debatable name for this class of ligands, and “mesoionic C-donor” may be more accurate.

      PubDate: 2014-10-03T19:20:58Z
       
  • Chapter One Free Boroles The Effect of Antiaromaticity on Their Physical
           Properties and Chemical Reactivity
    • Abstract: Publication date: 2013
      Source:Advances in Organometallic Chemistry, Volume 61
      Author(s): Holger Braunschweig , Ivo Krummenacher , Johannes Wahler
      Free borole chemistry has witnessed enormous progress in the past years that led to new insights into their bonding, antiaromaticity, and reactivity. While the early research in the field was mainly stimulated by fundamental questions regarding their 4π-electron antiaromaticity, boroles are increasingly in the focus of current research activities due to their unusual electronic and optical properties, which arise from the overlap of the vacant p z -orbital on boron with the diene system in the five-membered ring. This chapter gives a systematic and comprehensive account of free borole chemistry with a particular emphasis on substituent effects on their molecular properties.

      PubDate: 2013-09-17T11:03:19Z
       
  • Chapter Two Recent Progress in the Chemistry of Metal Amidinates and
           Guanidinates Syntheses, Catalysis and Materials
    • Abstract: Publication date: 2013
      Source:Advances in Organometallic Chemistry, Volume 61
      Author(s): Frank T. Edelmann
      This review provides a comprehensive overview of the most recent progress in chemistry and applications of metal complexes containing heteroallylic ligands such as amidinates and guanidinates. Clearly, the coordination chemistry of amidinates and guanidinates has reached a state of maturity and continues to be a highly popular area of research. These heteroallylic ligand systems allow a wealth of variations and modifications, making a larger ligand library available than in cyclopentadienyl chemistry. Exciting results have been obtained in recent years for almost any metallic elements in the Periodic Table. Truly remarkable developments include, for example, the chemistry of cyclic amidinate-based silylenes and the stabilization of metal–metal quadruply and quintuple bonds by amidinate and guanidinate ligands. The range of applications for metal amidinates and guanidinates in homogeneous catalysis has considerably broadened in recent years. In materials science, alkyl-substituted metal amidinates and guanidinates are now well established as volatile precursors for a variety of ALD and MOCVD processes. Without doubt the chemistry of metal amidinates and guanidinates and related complexes will continue to produce exciting results and applications in the years to come.

      PubDate: 2013-09-17T11:03:19Z
       
 
 
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