ChemInform Abstract: The Reaction of 6‐Substituted 4‐Pyrone‐2‐carboxylic Acids with O‐Phenylenediamine. Synthesis and Structure of 3‐(1H‐1,5‐Benzodiazepin‐2(3H)‐ylidenemethyl)quinoxalin‐2(1H)‐ones.

Abstract

The Reaction of 6-Substituted 4-Pyrone-2-carboxylic Acids with O-Phenylenediamine. Synthesis and Structure of 3-(1H-1,5-Benzodiazepin-2(3H)-ylidenemethyl)quinoxalin-2(1H)-ones. -The reactions of 4-pyrone-2-carboxylic acid derivatives (I), (V), (X), and (XIII) with o-phenylenediamine (II) or 2-aminophenol (VIII) are described. The dependence of the reaction products on reaction conditions and substituents is studied. -(OBYDENNOV*, D. L.; SOSNOVSKIKH, V. Y.; Chem. Heterocycl. Compd. (N. Y., NY, U. S.) 51 (2015) 3, 281-290, http://dx.