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Amides of N-methyl-4-quinolone-3-carboxylic acid

✍ Scribed by I. A. Kozello; V. I. Khmelevskii; A. Ya. Gasheva

Book ID
112398383
Publisher
Springer
Year
1971
Tongue
English
Weight
137 KB
Volume
5
Category
Article
ISSN
0091-150X

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hototropic tautomerkm in 4-quinolone-3-carboxylic acid derivatives has been studied with particular emphasis on the intluence of the ring substituents on the equilibrium. The techniques used include W. 1H-NMR. 13C-NMR (soluttonl and 13C-NMR CP/MAS (solid state) and semiempirical and ab tnltio calcul

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## Abstract A modification of the Gould‐Jacobs reaction, particularly useful for the preparation of N‐alkyl‐4‐quinolone‐3‐carboxylic acids, is described. Decarboxylation of these acids leads to N‐alkyl‐4‐quinolones or, in the case of N‐ethyl‐benzo[h]‐4‐quinolone‐3‐carboxylic acid, to 4‐ethoxy‐benzo