Subjects -> CHEMISTRY (Total: 986 journals)
    - ANALYTICAL CHEMISTRY (59 journals)
    - CHEMISTRY (713 journals)
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    - INORGANIC CHEMISTRY (45 journals)
    - ORGANIC CHEMISTRY (47 journals)
    - PHYSICAL CHEMISTRY (71 journals)

ORGANIC CHEMISTRY (47 journals)

Showing 1 - 41 of 41 Journals sorted alphabetically
ACS Omega     Open Access   (Followers: 2)
Advances in Image and Video Processing     Open Access   (Followers: 18)
Advances in Physical Organic Chemistry     Full-text available via subscription   (Followers: 4)
Advances in Redox Research     Open Access   (Followers: 4)
American Journal of Organic Chemistry     Open Access   (Followers: 15)
Asian Journal of Organic Chemistry     Hybrid Journal   (Followers: 4)
Beilstein Journal of Organic Chemistry     Open Access   (Followers: 13)
Biochemia Medica     Open Access  
Current Organic Chemistry     Hybrid Journal   (Followers: 14)
Current Organic Synthesis     Hybrid Journal   (Followers: 12)
European Journal of Organic Chemistry     Hybrid Journal   (Followers: 59)
Herbal Medicine: Open Access     Open Access  
International Journal of Organic Chemistry     Open Access   (Followers: 9)
International Journal of Polymeric Materials     Hybrid Journal   (Followers: 6)
Journal of Bioactive and Compatible Polymers     Hybrid Journal   (Followers: 2)
Journal of Biomaterials Science, Polymer Edition     Hybrid Journal   (Followers: 9)
Journal of Organic Semiconductors     Open Access   (Followers: 6)
Journal of Peptide Science     Hybrid Journal   (Followers: 14)
Journal of Physical Organic Chemistry     Hybrid Journal   (Followers: 8)
Journal of Physiology and Biochemistry     Hybrid Journal   (Followers: 3)
Journal of Progressive Research in Chemistry     Open Access  
Journal of Proteins and Proteomics     Open Access   (Followers: 2)
Mini-Reviews in Organic Chemistry     Hybrid Journal   (Followers: 10)
Nigerian Journal of Chemical Research     Full-text available via subscription   (Followers: 1)
Open Journal of Organic Polymer Materials     Open Access   (Followers: 1)
Organic & Biomolecular Chemistry     Hybrid Journal   (Followers: 56)
Organic and Medicinal Chemistry Letters     Open Access   (Followers: 5)
Organic Chemistry : Current Research     Open Access   (Followers: 12)
Organic Chemistry Frontiers     Hybrid Journal   (Followers: 9)
Organic Chemistry International     Open Access   (Followers: 7)
Organic Geochemistry     Hybrid Journal   (Followers: 3)
Organic Letters     Hybrid Journal   (Followers: 92)
Organic Preparations and Procedures International: The New Journal for Organic Synthesis     Hybrid Journal   (Followers: 3)
Organic Process Research & Development     Hybrid Journal   (Followers: 32)
Progress in Organic Coatings     Hybrid Journal   (Followers: 7)
Reports in Organic Chemistry     Open Access   (Followers: 7)
Russian Journal of Organic Chemistry     Hybrid Journal   (Followers: 3)
Synthetic Communications: An International Journal for Rapid Communication of Synthetic Organic Chemistry     Hybrid Journal   (Followers: 31)
The Journal of Organic Chemistry     Hybrid Journal   (Followers: 135)
Vibrational Spectroscopy     Hybrid Journal   (Followers: 11)
World Journal of Organic Chemistry     Open Access   (Followers: 5)
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Current Organocatalysis
Number of Followers: 2  
 
  Hybrid Journal Hybrid journal (It can contain Open Access articles)
ISSN (Print) 2213-3372 - ISSN (Online) 2213-3380
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  • Meet the Editorial Board Member

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      PubDate: Wed, 15 Dec 2021 00:32:57 -070
       
  • An Efficient One-pot Stereoselective Synthesis of 2,6-disubstituted
           4-thiocyanatotetrahydropyrans

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      Abstract: An efficient stereoselective synthesis of 2,6-disubstituted-4-thiocyanatotetrahydropyrans has been developed through a one-pot three-component reaction of aldehydes, trimethyl allylsilane, and NH4SCN in the presence of BF3.Et2O at room temperature. The products are formed rapidly (10-30 min) in excellent yields (78-98%).
      PubDate: Wed, 15 Dec 2021 00:32:57 -070
       
  • Advance Synthetic Approaches to 1,2,3-triazole Derived Compounds: State of
           the Art 2004-2020

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      Abstract: Background: 1,2,3-triazole is considered a widely explored scaffold by medicinal chemists because of its therapeutic importance. The structural characteristics of 1,2,3-triazoles allow it to mimic certain functional groups demonstrating its utility to prepare new medicinal compounds using the concept of bioisosterism and molecular hybridization. Centered on Huisgens cycloaddition reaction, over the past decade and a half, developed click chemistry approaches to furnish triazole derivatives with various applications ranging from drugs to bioconjugation linkers. Objective: In the present review, we aim to highlight the different approaches developed for the synthesis of 1,2,3-triazole derivatives and in particular, advances in synthetic methods for the last 16 years. This review is also intended to help researchers for finding potential future directions and scope in the development of synthetic strategies. Conclusion: As summarized through the compilation of recent advances for 1,2,3-triazole synthesis, it is clear that these protocols have numerous advantages such as cleaner reaction profile, shorter reaction times, excellent product yields, environmentally benign milder reactions, and safe operations.
      PubDate: Wed, 15 Dec 2021 00:32:57 -070
       
  • Developments in Organocatalyzed C(Ar)- C(Ar) Bond formation Reactions
           Involving Single Electron Transfer Mechanism: An Overview

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      Abstract: The formation of new bonds through C-C bond formation is of utmost importance in the synthesis of biologically privileged scaffolds and therapeutic drugs. In recent years, extensive efforts has been done to improve the intermolecular and intramolecular cross-coupling reaction in the simple, mild, efficient, economical, and eco-friendly manner via transition metal-free or organocatalytic direct C-H bond activation methodology. The traditional cross-coupling era continuously shifted to metal-free, organocatalytic, or metal-free cross-dehydrogenative coupling strategies to fast-track the reactions and diminishing the typical purification processes. Therefore, recent advances on the transition-metal-free, organocatalytic inter- and intra-molecular cross-coupling reactions have been introduced and discussed in the present article. In view of the reaction mechanism, organocatalytic cross-coupling reactions undergo through radical pathways, radical anionic intermediate which is completely different from traditional transition metal-catalyzed reactions. The exploration of transition metal-free organocatalyzed cross-couplings for direct C-H arylation of arenes has grown significantly, thereby, improving the formation of a wide range of aryl-aryl /arylheteroaryl/ heteroaryl-heteroaryl compounds. In the survey, transition metal-free/organocatalytic cross-coupling reactions showed a higher efficiency under simple and mild conditions than the comparative transition metal-catalyzed cross-coupling reactions. However, the higher regioselectivity and chemoselectivity are still far ahead in organocatalytic cross-coupling reactions due to their specific intrinsic mechanistic pathway. The tuning of many parameters such as oxidative states, ligands coordination, and counter anions, etc., which results in the specific direct C-H functionalization with flexible methodology are missing in the transition metal-free cross-coupling reactions. The highly systematic transition metal-catalyzed chemistry is still playing a dominant role over transition metal-free chemistry in organic synthesis. The organocatalyzed transition-metal-free conditions should be more efficient, chemoselective, and regioselective for further potential development and applications in organic synthesis. For the endless pursuit of sustainable chemistry and green chemistry, such transition-metal-free/organocatalytic reactions should be never ceased. Additional curious attention and interest have been developed so far, and chemists are showing their eagerness and talents to uncover the hidden treasure of green chemistry. In this review article, we highlighted the developments of various transition metal-free/organocatalytic C-H bond activation reactions which further encourages the advancement in the development of sustainable C-C coupling reactions and their further applications towards the synthesis of biologically privileged scaffolds and drug molecules.
      PubDate: Wed, 15 Dec 2021 00:32:57 -070
       
  • Acidic Pyridinium Inner Salt as a New, Effective and Reusable Catalyst for
           the One-Pot Three-Component Synthesis of N-substituted 5-aryl-4-benzoyl-
           3-hydroxy-3-pyrrolin-2-ones in Aqueous Media

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      Abstract: Background: The present method is facile and effective for the synthesis of N-substituted 5-aryl-4-benzoyl-3-hydroxy-3-pyrrolin-2-one derivatives which are obtained by one-pot threecomponent condensation reactions of aromatic aldehydes, primary amines and ethyl benzoylpyruvate in the presence of a novel homogeneous catalyst including acidic pyridinium inner salt (PIS) at 50°C in ethanol and water mixture as solvent. Methods: 5-Aryl-4-benzoyl-3-hydroxy-3-pyrrolin-2-ones were synthesized through a one-pot three- -component tandem formation of Schiff base cyclo condensation reaction of aromatic aldehydes, primary amines and ethyl benzoylpyruvate in the presence of 10 mol% of acidic pyridinium inner salt as a catalyst under aqueous ethanol medium at 50°C. All obtained structures were confirmed by their elemental analysis data and IR, 1H NMR and 13C NMR spectroscopy. Results: Three-component synthesis of 5-aryl-4-benzoyl-3-hydroxy-3-pyrrolin-2-ones catalyzed by acidic pyridinium inner salt with aromatic aldehydes, primary amines and ethyl benzoylpyruvate in aqueous ethanol medium at 50°C was prepared. The achieved derivatives (eight entries) were well synthesized in excellent yields. Conclusion: We found acidic pyridinium inner salt as a proper catalyst for this method. A catalyst’s novelty is excellent catalytic activity, easy separation of the reaction mixture by washing with cold water and reusability of the catalyst for six consecutive periods without disrupting the activity of this catalyst system.
      PubDate: Wed, 15 Dec 2021 00:32:57 -070
       
  • Synthesis of 4-Aryldihydrocoumarins via a Sequential Michael Addition-
           Lactonization Route

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      Abstract: Background: Coumarin and its derivatives have attracted the attention of synthetic chemists due to their importance in pharmaceutical and medicinal chemistry. The acid-catalyzed cyclization route constitutes the method of choice to access these important compounds. Objective: In this paper, we have discussed the synthesis of 4-aryldihydrocoumarins via a one-pot p-sulfonic acid calix[4]arene catalyzed reaction. Methods: The easily prepared calix[4]arene derivative catalyzes a sequential reaction involving Michael addition followed by intramolecular lactonization to afford the title compound in effective yield. Results: The described methodology is devoid of any metal salt, thus making it a very appealing protocol to safely produce dihydrocoumarins of pharmacological importance. Conclusion: The easy recovery, non-toxicity, and reusability of the catalytic system are some of the other advantages of our procedure. In addition, the catalyst efficiency is not compromised after its successive use in reactions.
      PubDate: Wed, 15 Dec 2021 00:32:57 -070
       
  • Green Synthesis of 1H-pyrazolo[1,2-b]phthalazinedione-2-carbonitriles in
           the Presence of L-proline

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      Abstract: Background: Pyrazolophthalazinedione derivatives show various biological activities such as anti-bacterial, anti-cancer, anti-coagulant, anti-convulsant, anti-fungal, anti-hypoglycemic, anti-inflammatory, anti-tumor, anti-viral, cardiotonic, cytotoxic and vasorelaxant activities. Objective: The purpose of this study was to synthesize compounds that have various medicinal properties. Methods: Diverse 3-amino-5,10-dioxo-1-phenyl-5,10-dihydro-1H-pyrazolo[1,2-b]phthal-azine-2-- carbonitriles were synthesized from the one-pot three components green synthesis of phthalhydrazides, aromatic aldehydes and malononitrile in the presence of the proline organocatalyst in ethanol at reflux conditions in excellent yields. Results: Proline was used as an efficient organocatalyst for the one-pot three components green synthesis of diverse pyrazolophthalazinecarbonitriles. In the absence of the proline organocatalyst, the yield was very low. Also, electron withdrawing or electron releasing groups don’t have a meaningful effect on the reaction times and the structures of all products were in agreement with their IR and NMR spectra. Conclusion: In the IR spectra, the appearance of the sharp NH2 and the CN peaks at about 3300 and 2300 cm-1, respectively confirm formation of the products.
      PubDate: Wed, 15 Dec 2021 00:32:57 -070
       
  • Efficacious One-pot Synthesis of 2-thiazolines and 2-oxazolines Under
           Solvent and Metal-Free Conditions

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      Abstract: Background: 2-oxazolines and 2-thiazolines are important heterocycles due to their extensive applications in chemistry, biochemistry, and pharmacology. Most of the precedent methods for preparing these heterocycles involve one or more drawbacks, including harsh reaction conditions, long reaction times, low yields of products, high temperature, and toxic solvents. Objective: The aim of this study was to develop a new and eco-efficient method for the preparation of 2-oxazolines and 2-thiazolines. Methods: Amino alcohols were condensed with nitriles in a sealed tube under solvent-free and metal- free conditions. Results: Our procedure appears to be highly eco-efficient and promotes quantitative access to 2-oxazolines and 2-thiazolines using simple and minimum manipulation. Conclusion: This simple approach allows high conversion for different nitriles yielded from 78 to 99% and easy isolation of the targeted products without further purification. To the best of our knowledge, our procedure is the most efficient and fast method reported to date in terms of chemical yields, number of steps, and atom economy.
      PubDate: Wed, 15 Dec 2021 00:32:57 -070
       
  • Ultrasound-Promoted Sustainable Synthesis and Antimicrobial Evaluation of
           2-Aryl Benzimidazoles Catalyzed by BPAE at Room Temperature

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      Abstract: Background: Present-day chemists are more interested in developing and using green chemistry protocol for various organic transformations, which employ natural feedstock extracts, and solvent-free, and greener catalysts; they are well known for their non-hazardous nature and have replaced many organic and inorganic based catalysts. In literature, the reported homogenous catalytic approaches have been employed for various bioactive heterocycle syntheses, which follow the green chemistry principle established for various organic transformations catalyzed by WERSA, BFE, WEPPA, WEMFSA, WEMPA, and Eichhorniacrassipes. Among them, 2-aryl benzimidazole derivatives have emerged as prominent molecules with a wide variety of applications in biological and material science. Methods: The agro-waste sourced from the banana peel is utilized for the preparation of BPAE catalyst, which is employed for the synthesis of 2-aryl benzimidazole derivatives under ultrasound waves at room temperature. Results: Here, 2-Aryl benzimidazoles synthesized through the reaction of a substituted o-phenylene diamine with substituted benzoyl chloride catalyzed by BPAE under ultrasound waves at room temperature are described. Furthermore, catalyst BPAE is characterized by flame emission spectrometry, SEM-EDX, and XRD techniques. Conclusion: The present work established an eco-friendly, sustainable and novel approach for the synthesis of 2-aryl benzimidazoles using natural feedstock BPAE. The major merits of BPAE include its use as an agro-waste-derived catalyst. It is also highly abundant, inexpensive, yields faster reactions, has a simple workup, and does not require the use of column chromatography.
      PubDate: Wed, 15 Dec 2021 00:32:57 -070
       
  • Selective Reduction of Aromatic Alkynes Catalyzed by Palladium with Formic
           Acid as the Hydride Source

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      Abstract: Background: Transfer hydrogenation methods that employ non-H2 hydrogen sources have evolved as an attractive alternative for conventional hydrogenation approaches. Objective: In this study, we aimed at developing optimized conditions to induce the selective transfer hydrogenation reduction of aromatic alkynes catalyzed by PdCl2(PPh3)2 and using formic acid as the hydride source. Methods: The effect of various reaction parameters, such as the nature and amount of the catalyst, the H-donor/base couple, reaction time and temperature, and the nature of the solvent on the outcome of the alkyne reduction were investigated. Results: The reduction of the alkyne can be chemoselectively controlled by adjusting the reaction conditions. Among the tested catalysts, PdCl2(PPh3)2 was the most suitable, with 2% of the catalyst being the optimal amount. While the reduction was successful in different solvents of different polarities, THF was selected as the solvent of choice. The reduction of diphenylacetylene yielded the alkene both at 50°C and 80°C. When testing the optimized conditions on the reduction of 4- phenyl-3-butyne-2-one, quantitative partial reduction to the corresponding α,β-unsaturated ketone was obtained at 50°C, while the saturated ketone was produced as the major product at 80°C. Conclusion: The chemoselective reduction of aromatic alkynes was performed successfully with complete conversion using 2% PdCl2(PPh3)2 as a catalyst, formic acid/NEt3 as the H-donor/base couple, THF as the solvent, at 50°C and 80°C.
      PubDate: Wed, 15 Dec 2021 00:32:57 -070
       
  • Trends in Photocatalysis Research from the Year 2000 to 2020

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      Abstract: Background: The sole objective of the present study is to explore the research trends in photocatalysis. Materials and Methods: In this area, the first document was published in the year 1921 and until August 2020, a total of 6940 documents have been archived in the Scopus database. Results and Discussion: It is worthy to note that after 2000, a remarkable increase in publications has been noticed. In fact, 6605 articles have been published after 2000. The highest number of publications have been reported in 2019 (784/11.87% of 6605) followed by 2018 (740/11.20% of 6605) and 2017 (624/9.45% of 6605). We calculated the per year growth rate and doubling time of publications. In research publications, the top three (3) countries are China (3030/43.65%), USA (704/10.14%) and India (503/7.24%). We provided the details which may explain why China is the global leader in photocatalysis research. Furthermore, by Vosviewer analysis, we provided the coauthorship and citation details of only research articles and reviews (total 6197 documents). Based on the (a) number of publications and (b) citations, the list of top ten (10) authors, institutes, countries and source details are provided. We also performed the Vosviewer analysis for China’s publications (n=3030). The details about the top authors, institutes and collaborative countries are provided. One of the fundamental questions is: what has been covered in photocatalysis research articles and reviews (n=6197)' For this purpose, we manually analyzed 47,722 keywords and grouped them into different categories. Conclusion: Mostly the document covered research under the names of photocatalysis, semiconductors, photochemical sources, instrumental techniques, electrochemistry, nanomaterials and water treatment. We extended the idea and explored the research publications in selected semiconductors (like titanium, graphene, cadmium, bismuth and iron-based compounds), water purification, toxic pollutants, photocatalytic reduction of carbon dioxide, nanomaterials and certain specific instruments like SEM, TEM & XRD, etc.
      PubDate: Wed, 15 Dec 2021 00:32:57 -070
       
  • Editorial

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      PubDate: Wed, 15 Dec 2021 00:32:57 -070
       
  • Acknowledgements to Reviewers

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      PubDate: Wed, 15 Dec 2021 00:32:57 -070
       
 
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