4‐Hydroxyquinol‐2‐ones. Part 86. Synthesis of Methyl (Ethyl) Esters of 1‐Substituted 4‐Amino‐2‐oxoquinoline‐3‐carboxylic Acids.

Abstract

Quinoline derivatives R 0410 4-Hydroxyquinol-2-ones. Part 86. Synthesis of Methyl (Ethyl) Esters of 1-Substituted 4-Amino-2-oxoquinoline-3-carboxylic Acids. -Prolonged reaction times for the deprotection of the benzylamines result in additional decarboxylation. Other approaches to the desired products are also presented. -(UKRAINETS, I. V.; SIDORENKO, L. V.; GOROKHOVA, O. V.; Chem. Heterocycl.