Reaction of acylpyruvic acid esters with hydrazides
作者:V. V. Pakal’nis、I. V. Zerova、S. I. Yakimovich、V. V. Alekseyev
DOI:10.1007/s10593-013-1261-x
日期:2013.6
Hydrazides reacted with acylpyruvic acid esters possessing a terminal straight chain alkyl substituent at the C=O bond distal from the ester group, giving 5-hydroxy-2-pyrazolines. Acylpyruvates with bulky terminal substituents underwent condensation at the C=O bond adjacent to the ester group, giving products with hydrazone or 5-hydroxy-2-pyrazoline structure and capable of displaying ring-chain equilibrium