New heterocycles of 2,3-diaryl-substituted maleic hydrazides
作者:Hsiencheng Shih[]、Renshuay J. Shih、Dennis A. Carson
DOI:10.1002/jhet.631
日期:2011.11
2,3‐Diaryl‐substituted maleicanhydrides were prepared by a modified one‐pot synthesis of Perkin condensation using mixed sodium salts of arylglyoxylic acid and arylacetic acid with aceticanhydride in 1,4‐dioxane. The treatment of these anhydrides with ammonium bicarbonate, or methanolic hydrazine, offered the corresponding 2,3‐diaryl‐substituted maleimides and maleic hydrazides (4,5‐diaryl‐substituted