Subjects -> CHEMISTRY (Total: 986 journals)
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    - CHEMISTRY (713 journals)
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    - 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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Russian Journal of Organic Chemistry
Journal Prestige (SJR): 0.246
Citation Impact (citeScore): 1
Number of Followers: 3  
 
  Hybrid Journal Hybrid journal (It can contain Open Access articles)
ISSN (Print) 1608-3393 - ISSN (Online) 1070-4280
Published by Springer-Verlag Homepage  [2537 journals]
  • Self-Oxidation of the Condensation Product of Indane-1,3-dione with
           Quinoline-2-carbaldehyde

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      Abstract: The reaction of indane-1,3-dione with quinoline-2-carbaldehyde results in the formation of 2-[(3-hydroxy-1-oxo-1H-inden-2-yl)(quinolin-2-yl)methylene]-1H-indene-1,3(2H)-dione, which is the first example of self-oxidation of the initially formed Michael diadduct.
      PubDate: 2021-11-01
       
  • Specific Features of Tosylation of 2-Substituted Pyrimidin-4(3H)-ones
           Containing a Double Bond in the α-Position of the Side Chain

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      Abstract: The reaction of 2-(1-hydroxyimino-2-oxo-2-phenylethyl)-6-R-pyrimidin-4(3H)-ones with an excess of p-toluenesulfochloride proceeds in two stages involving consecutive oxidation of the oxygen atom of the hydroxyimino group and the oxygen atom of the amide fragment of the pyrimidine ring. The reaction of the resulting ditosylates with ethylenediamine proceeds via replacement of the sulfonyl group in the 2-position of the pyrimidine ring. The examples of 2-[1-benzoyl-2-(2-furyl)vinyl]-6-methylpyrimidin-4(3H)-one, 2-[2-(4-nitrophenyl)vinyl]-6-methylpyrimidine-4(3H)-one, and 6-methyl-2-(2-oxo-2-phenylethylthio)pyrimidin-4(3H)-one were used to consider the relationship between the structure of the substrate and the direction of the tosylation reaction.
      PubDate: 2021-11-01
       
  • Cross Coupling of Bis[(E)-2-bromovinyl)] Selenide with Terminal Acetylenes
           in the Presence of Pd(PPh3)4: the First Example of the Sonogashira Cross
           Coupling Involving Vinyl Selenide

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      Abstract: Bis[(E)-2-bromovinyl] selenide enters cross coupling with terminal acetylenes in the presence of a Pd/CuI catalyst at room temperature. The reaction involves both the bromine atom and the selanyl function and leads to both substituted bis(but-1-en-3-ynyl) selenides and enediynes with complete retention of the configuration of the parent selenide.
      PubDate: 2021-11-01
       
  • Synthesis of Novel Derivatives of 1-Metoxy-3-methylcarbazole –
           Murrayafoline A Alkaloid

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      Abstract: The paper presents the results of a study on the synthesis of new derivatives of the murrayafoline alkaloid, potential inhibitors of tumor processes, which combine in their structure 2 chromatophores: 2-aminopyrimidine and murrayafoline. Pyrimidine-substituted (chloromethylphenyl)carboxylic acid amides, the key intermediates of the synthesis, were prepared by the acylation of 2-[(arylamino)amino]pyrimidine with 4-(chloromethyl)benzoyl chloride. The subsequent alkylation of 1-methoxy-3-methylcarbazole with pyrimidine-substituted (chloromethyl)phenylcarboxylic acid amides in the presence of sodium methoxide gave novel murrayafoline derivatives in yields of 60–80%. As a result of a side nucleophilic reaction with sodium methoxide, the key intermediates partially converted into methyl esters.
      PubDate: 2021-11-01
       
  • Pentacarboxycyclopentadienes in Organic Synthesis

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      Abstract: The review summarizes the literature data on the synthesis, structure, reactivity, and rearrangements of pentacarboxycyclopentadienes and their derivatives. Their potential for creating new chiral organic catalysts for enantioselective Diels–Alder reactions, cationic polymerization of vinyl ethers, enantioselective protonation of silylenol ethers, aminomethylation, and other processes is described, and aspects of their use as effective carriers of functional groups, new ligand systems for the synthesis of metal complexes and donor-π-acceptor chromophores for organic photovoltaics are considered.
      PubDate: 2021-11-01
       
  • N-Nitrosation of Glycolurils Catalyzed by
           1-Hydroxyethylidene-1,1-diphosphonic Acid

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      Abstract: A number of N-nitroso derivatives of glycolurils were obtained for the first time, using sodium nitrite and 1-hydroxyethylidene-1,1-diphosphonic acid (HEDP) as a green catalyst. The procedure was carried out in an aqueous heterophase medium without the use of aggressive acids.
      PubDate: 2021-11-01
       
  • New Options of Multicomponent Condensations Leading to Functional
           Derivatives of 2-Pyridons

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      Abstract: Multicomponent condensations of activated olefins, functionalized CH-acids, and alkylating reagents, which open up the possibility of preparing derivatives of substituted 2-pyridones, have been studied. The structure of some compounds has been confirmed by X-ray diffraction analysis.
      PubDate: 2021-11-01
       
  • Synthesis of Covalent Conjugates of Dichloroacetic Acid with
           Polyfunctional Compounds

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      Abstract: The development of prodrugs with an ester bond is classical tool to enhance the bioavailability of pharmaceutical compounds including readily ionizable molecules, such as acids or phenols. In this work, we studied the introduction of a dichloroacetic acid fragment into a molecule as an approach to anticancer prodrug development. The metabolically released dichloroacetate will have an additional useful effect by altering the respiratory cycle of cancer cells and promoting their apoptosis. Derivatives of vitamins B1 and C, paracetamol, and salicylic acid, often used in concomitant cancer therapy, were prepared, and the possibility of selective modification of other polyfunctional compounds was studied. The difference in the reactivity of hydroxy groups in tris(hydroxyphenyl)-substituted cis-imidazoline was studied.
      PubDate: 2021-11-01
       
  • Synthesis and Biological Activity of Substituted
           2-[2-(Diphenylmethylene)hydrazinyl]-5,5-dimethyl-4-oxohex-2-enoates

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      Abstract: The synthesis of new substituted 2-[2-(diphenylmethylene)hydrazinyl]-5,5-dimethyl-4-oxohex-2-enoates is described. The synthesis from commercially available starting materials included the preparation of 5,5-dimethyl-2,4-dioxohexanoic acid via Claisen condensation of 3,3-dimethylbutan-2-one (pinacolone) and diethyl oxalate in the presence of sodium methanolate. The resulting acid reacted with (diphenylmethylene)hydrazine to form 2-[(diphenylmethylene)hydrazono]-5,5-dimethyl-4-oxohexanoic acid. The initial 5-(tert-butyl)-3-[(diphenylmethylene)hydrazono]furan-2(3H)-one was obtained by a known literary method: intramolecular cyclisation of 2-[(diphenylmethylene)hydrazono]-5,5-dimethyl-4-oxohexanoic acid under the action of propionic anhydride. 5-(tert-Butyl)-3-[(diphenylmethylene)hydrazono]furan-2(3H)-one entered the decyclization reaction under the action of primary aromatic alcohols to form substituted 2-[2-(diphenylmethylene)hydrazinyl]-5,5-dimethyl-4-oxohex-2-enoates. The presence of equimolar quantities of triethylamine was important; otherwise, the reaction proceeded with low yields. The isolation of target compounds was carried out by filtration of the resulting sediment followed by recrystallization. The structure of the compounds obtained was confirmed by the 1H and 13C NMR spectroscopy methods. The resulting substituted esters exist in a solution of deuterated chloroform in one tautomeric form, in contrast to the previously studied solutions of deuterated DMSO, where up to four tautomeric forms were observed. Analgesic and anti-inflammatory activity of new and previously synthesized compounds of this series has been studied. Analgesic activity was evaluated by the “Hot Plate” test on outbred white mice of both sexes with intraperitoneal injection. Anti-inflammatory activity was studied on a carrageenan-induced paw edema model with oral administration of the studied substances. One compound possesses both high analgesic and high anti-inflammatory effects, which causes the prospects for its use as a pharmacologically active substance.
      PubDate: 2021-11-01
       
  • On the Mechanism of Propynyloxirane Rearrangement

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      Abstract: The most probable mechanism for the opening of the oxirane ring in propynyloxirane (3-ethynyl-1,2-epoxypropane) is presented. Due to the rearrangement, a mixture of the Z and E isomers of enyne alcohols is formed. The 1H NMR data and quantum-chemical calculations revealed intramolecular interactions between the π-electrons of the triple bond and the OH proton in the six-membered ring of the Z isomer.
      PubDate: 2021-11-01
       
  • Multicomponent Synthesis and Molecular and Crystal Structure of New
           Derivatives of Partially Hydrogenated Quinolines

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      Abstract: The multicomponent condensation of aromatic aldehydes, cyanothioacetamide, 1-(cyclohex-1-en-1-yl)azepine, and α-halocarbonyl compounds was studied. As a result, new derivatives of partially hydrogenated quinolines were synthesized. The molecular and crystal structures of a number of the synthesized heterocycles were studied X-ray analysis.
      PubDate: 2021-11-01
       
  • Synthesis of [2+1] Conjugates of Betulic Acid with α,ω-Diols

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      Abstract: Three synthetic approaches to [2+1] conjugates of betulic acid with α,ω-diols have been tested. The best results have been obtained in the reaction of betulic acid with α,ω-dibromides in the presence of potassium carbonate in DMF.
      PubDate: 2021-11-01
       
  • Synthesis of Purpurosamine TBDMS Ether from Cyrene™

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      Abstract: A procedure has been developed for the synthesis of purpurosamine tert-butyl(dimethyl)silyl ether starting from dihydrolevoglucosenone (cyrene™) via successive reduction of the keto group, tosylation, cleavage of the 1,6-anhydro bridge, mesylation of the primary hydroxy group, TBDMS protection of the acetal moiety, and nucleophilic substitution in liquid ammonia in a sealed ampule at 100°C.
      PubDate: 2021-10-01
       
  • One-Pot Synthesis of 3-Oxocycloalka[c]pyridines

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      Abstract: A new efficient one-pot procedure has been developed for the synthesis of 1-substituted partially hydrogenated 3-oxocycloalka[c]pyridine-4-carbonitriles by reaction of cyclopentanone or cyclohexanone with morpholine, acyl chloride, and cyanoacetamide. The proposed procedure is advantageous due to shorter reaction time and smaller amounts of the solvents and reactants.
      PubDate: 2021-10-01
       
  • Efficient Synthesis of
           5-[3(4)-(5-Phenyl-1,3,4-oxаdiаzol-2-yl)­anilino]-1,2,4-triаzines

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      Abstract: 1,2,4-Triazine derivatives containing a 3- or 4-(5-phenyl-1,3,4-oxadiazol-2-yl)anilino group on C5 were synthesized by nucleophilic substitution of the cyano group in 3,6-diaryl-1,2,4-triazine-5-carbonitriles under solvent-free conditions.
      PubDate: 2021-10-01
       
  • Synthesis of Dispiro[indeno[1,2-b]quinoxaline] Derivatives via 1,3-Dipolar
           Cycloaddition Reactions

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      Abstract: 1,3-Dipolar cycloadditions of (E)-7-(arylmethylidene)-6,7-dihydroindolizin-8(5H)-one and (E)-2-(arylmethylidene)-2,3-dihydro-1H-pyrrolizin-1-one with azomethine ylide generated in situ by the reaction of 11H-indeno[1,2-b]quinoxalin-11-one and L-proline afforded novel 1′-aryl-5′,5″,6′,6″,7′,7a′-hexa­hydro-1′H,8″H-dispiro[indeno[1,2-b]quinoxaline-11,3′-pyrrolizine-2′,7″-indolizin]-8″-ones and 1′-aryl-5′,6′,7′,7a′-tetrahydro-1′H,1″H,3″H-dispiro[indeno[1,2-b]quinoxaline-11,3′-pyrrolizine-2′,2″-pyrrolizin]-1″-ones, respectively, in moderate to good yields. The structure of the synthesized compounds was thoroughly characterized by NMR, IR, HRMS, and X-ray analysis.
      PubDate: 2021-10-01
       
  • Glycylglycine and Its Morpholide Derivatives Containing
           5-(p-Tolyl)isoxazole and 4,5-Dichloroisothiazole Moieties

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      Abstract: The acylation of glycylglycine and its morpholide with 4,5-dichloroisothiazole-3-carbonyl chloride gave the corresponding N-(4,5-dichloroisothiazole-3-ylcarbonyl) derivatives. N-[5-(p-Tolyl)isoxazole-3-car­bonyl] analogs were synthesized by acylation of glycylglycine and its morpholide with 5-(p-tolyl)isoxazole-3-carbonyl azide since treatment of the same substrates with 5-(p-tolyl)isoxazole-3-carbonyl resulted in the formation of mixtures of products. The reactions of glycylglycine and its morpholide with phenyl N-(4,5-di­chloroisothiazol-3-yl)- and N-[(p-tolyl)isoxazol-3-yl]carbamates afforded derivatives containing an urea fragment. Some of the synthesized compounds showed antitumor activity and enhanced the antitumor effect of doxorubicin.
      PubDate: 2021-10-01
       
  • Synthesis of Acetylenic [Chloro(iodo)methyl]silanes and
           2-Sulfanylbenzothiazoles Based Thereon

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      Abstract: Bromomagnesium derivatives of ethynylsilanes [Me4–nSi(C≡CMgBr)n, n = 1–3] reacted with chloro­(chloromethyl)dimethylsilane to give the corresponding (chloromethyl)(ethynyl)silanes [Me4–nSi(C≡CSiMe2CH2Cl)n, n = 1–3] which were converted to iodomethyl analogs by exchange reaction with sodium iodide. The reaction of the resulting (iodomethyl)(ethynyl)silanes with 1,3-benzothiazole-2-thiol afforded new ethynylsilylmethyl thiazolyl sulfides.
      PubDate: 2021-10-01
       
  • Synthesis and Some Transformations of
           

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      Abstract: The condensation of ethyl 2-amino-6-cyano-6-phenyl-4,5,6,7-tetrahydro-1-benzothiophene-3-car­boxylate with formamide gave 4-oxo-7-phenyl-3,4,5,6,7,8-hexahydro[1]benzothieno[2,3-d]pyrimidine-7-carbo­nitrile which was treated with phosphoryl chloride to obtain the corresponding 4-chloro derivative. Reactions of the latter with secondary amines afforded a series of 4-aminobenzothienopyrimidines, and the reaction with hydrazine hydrate, followed by cyclization with formic acid, furnished 9-phenyl-8,9,10,11-tetrahydro[1]benzothieno[3,2-e][1,2,4]triazolo[1,5-c]pyrimidine-9-carbonitrile.
      PubDate: 2021-10-01
       
  • Application of Magnetically Recoverable Core–Shell Nanocomposite in the
           Synthesis of Bis(indolyl)methanes at Room Temperature

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      Abstract: A sulfonated polyethylene glycol-supported nano-magnetite (Fe3O4@PEG-SO3H) has been prepared, characterized, and evaluated as a magnetically recoverable core–shell nanocomposite catalyst for the synthesis of bis(indolyl)methane derivatives through the one-pot reaction of indole and aldehydes. Green and eco-friendly reaction profile, mild reaction conditions (room temperature), simple procedure, short reaction times, and excellent yields make this method versatile and demonstrate its practical merit for the synthesis of the title compounds with potential pharmacological activity. Furthermore, the excellent catalytic performance, thermal stability, and easy separation and reusability of the prepared nanocatalyst without significant deterioration in its catalytic activity make it a good heterogeneous system and a superior alternative to the existing protocols.
      PubDate: 2021-10-01
       
 
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