Study of the Reactivity of 6,8‐Dimethyl‐4‐oxo‐4 H ‐1‐benzopyran‐3‐carboxaldehyde Towards Amino‐6‐oxopyridine‐3‐carboxylate Derivatives | Zendy

ElShaaer Hafez Mohamed | Zendy; AbdElmonem Wafaa Ramzy | Zendy; Ibrahim Salah Sayed | Zendy; Ibrahim Christine Gamal | Zendy

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Study of the Reactivity of 6,8‐Dimethyl‐4‐oxo‐4 H ‐1‐benzopyran‐3‐carboxaldehyde Towards Amino‐6‐oxopyridine‐3‐carboxylate Derivatives

Author(s) -

ElShaaer Hafez Mohamed,

AbdElmonem Wafaa Ramzy,

Ibrahim Salah Sayed,

Ibrahim Christine Gamal

Publication year - 2014

Publication title -

journal of heterocyclic chemistry

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.321

H-Index - 59

eISSN - 1943-5193

pISSN - 0022-152X

DOI - 10.1002/jhet.1919

Subject(s) - chemistry , carboxylate , medicinal chemistry , benzene , reactivity (psychology) , acetic anhydride , ethanol , solvent , organic chemistry , xylene , condensation , acetic acid , benzopyran , catalysis , medicine , alternative medicine , physics , pathology , thermodynamics

The condensation reactions of 6,8‐dimethyl‐4‐oxo‐4 H ‐1‐benzopyran‐3‐carboxaldehyde ( 1 ) with equimolar amounts of ethyl 2‐amino‐4‐(4‐chlorophenyl)‐5‐cyano‐1‐[(5,6‐diphenyl‐1,2,4‐triazin‐3‐yl)amino]‐6‐oxo‐1,6‐dihydropyridine‐3‐carboxylate ( 2 ) at different reaction conditions gave different chromanone and chromenone products 3 , 4 , 5 . Also, the condensation reactions of compound 1 with ethyl 5‐cyano‐1,2‐diamino‐4‐(3‐nitrophenyl)‐6‐oxo‐1,6‐dihydropyridine‐3‐carboxylate ( 6 ) in absolute ethanol, dry benzene, acetic acid , and/or dry xylene gave a variety of products 7 , 8 , 9 , 10 depending on the solvent used.

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