Reaction of trifluoromethyl-containing 1,3-dicarbonyl compounds with bis-hydrazides
作者:A. V. Zerov、T. S. Krupenya、A. A. Petrov、S. I. Yakimovich
DOI:10.1134/s1070428016030039
日期:2016.3
Carbonic dihydrazide reacted with 2 equiv of trifluoroacetylacetone to give a compound containing 5-hydroxy-4,5-dihydropyrazole and keto enehydrazine fragments. Analogous 2 : 1 condensations of trifluoro-acetylacetone and 4-ethoxy-1,1,1-trifluorobut-3-en-2-one with oxalohydrazide and malonohydrazide afforded bis(5-hydroxy-4,5-dihydropyrazole) structures as two diastereoisomers.