A One-Step Synthesis of 2-Alkyl-5-hydroxychromones and 3-Alkoyl-2-alkyl-5-hydroxychromones
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منابع مشابه
Isoquinoline Promoted Synthesis of alkyl 2-(1-alkyl-5-oxo-3-phenyl-2-thioxotetrahydro-4H-imidazol-4-yliden) acetate derivatives
Derivatives of thiazolidinone ring systems are known to act as anti-HIV infections , analgesic, anti-bacterial, anti-convulsant, anti parasitic, potential anti-inflammatory and herbicidal agents. Due biological activities of thiazolidinones ring, several methods for their synthesis have been illustrated in literature. Imidazolidine-2-thiones were synthesized by the oxidative cyclization of 1-be...
متن کاملisoquinoline promoted synthesis of alkyl 2-(1-alkyl-5-oxo-3-phenyl-2-thioxotetrahydro-4h-imidazol-4-yliden) acetate derivatives
derivatives of thiazolidinone ring systems are known to act as anti-hiv infections , analgesic, anti-bacterial, anti-convulsant, anti parasitic, potential anti-inflammatory and herbicidal agents. due biological activities of thiazolidinones ring, several methods for their synthesis have been illustrated in literature. imidazolidine-2-thiones were synthesized by the oxidative cyclization of 1-be...
متن کاملFacile Synthesis of Some 2-Alkyl-3-Aryl-5, 6-Diphenyl-2, 3-Dihydro-Pyrazines and their Biological Activity
The reaction of benzil, 1-alkyl-2-arylethanediamine dihydrochloride and sodium acetate trihydrate gave the target molecule dihydropyrazine derivatives 30-34. The compounds have been characterized on the basis of their FT-IR, 1H NMR and 13C NMR spectroscopies. All the compounds are screened for their antibacterial activity against Staphylococcus aureus, Klebsiella pneumoniae, Pseudomonas aerugin...
متن کاملSynthesis of alkyl 2-(4-oxoquinazolin-3(4H)-yl) acrylate by nucleophilic additionof alkyl propiolates catalysed by Ph3P
4-Hydroxyquinazoline undergoes neutral conditions with alkyl propiolates in the presence of triphenylphosphine (0.26g), and by α substituation the corresponding 2-(4-oxoquinazolin-3(4H)-yl acrylate was obtained in good yields.
متن کاملA One-pot Condensation for Synthesis 2-methyl-4-phenylpyrano[3, 2-c] chromen-5(4H)-one and Synthesis of Warfarin by Ionic Liquid Catalysis
The anticoagulant racemic warfarin is synthesized by the Michael addition of 4-hydroxycoumarin with benzalacetone in the present of equimolar amounts of imidazolium based ionic liquids [bmim] BF4 and [bmim] Br and other reaction solvents such as H2O, pyridine and ammonia in five different tests. Also synthesis of a derivative of warfarin (2-methyl-4-phenyl pyrano [3, 2-c] chromen-5(4H)-one) und...
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ژورنال
عنوان ژورنال: Chemical and Pharmaceutical Bulletin
سال: 2005
ISSN: 0009-2363,1347-5223
DOI: 10.1248/cpb.53.1460