220000-42-0Relevant articles and documents
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.