220000-41-9Relevant academic research and scientific papers
Simple approach to some N-(5-hydroxy-1-phenyl-1H-pyrazol-4-yl)benzamides#
Cucek, Karmen,Golobific, Amalija,Vercek, Bojan
experimental part, p. 555 - 566 (2009/09/08)
Abstract - A series of substituted 5-hydroxy-lH-pyrazoles (5) was prepared by treatment of 4-hydroxymethylidene-2-phenyloxazol-5(4H)-one (1) with ethanol followed by reaction with phenylhydrazines and subsequent treatment with NaOH. Structures of the pyra
Synthesis of ethyl 3-(benzoylamino)indol-2-carboxylates involving an unexpected migration of the ethoxycarbonyl group
?u?ek,Ver?ek
, p. 120 - 122 (2007/10/03)
Ethyl 2-benzoylamino-3-(phenylhydrazono)propanoates, prepared from 4-hydroxymethylene-2-phenyl-5(4H)-oxazolone and phenylhydrazines in ethanoi, were converted to ethyl 3(benzoylamino)-1H-indole-2-carboxylates by heating in polyphosphoric acid whereas treatment with sodium hydroxide resulted in She formation of 4-benzoylamino-5-hydroxy-1-phenyl-1H-pyrazoles. Thieme.
