3-Oxoindazolinylmethylenephosphoranes from isatic acids
作者:Andreina Alemagna、Paola Del Buttero、Emanuela Licandro、Stefano Maiorana、Carlo Guastini
DOI:10.1039/c39830000337
日期:——
Coupling diazonium salts fromisaticacids with alkoxycarbonylmethylenephosphoranes leads directly to 3-oxoindazolin-2-ylalkoxycarbonylmethylenephosphoranes.
The coupling of diazonium salts fromisaticacids with alkoxycarbonylmethylenephosphoranes leads directly to 3-oxo-indazolin-2-yl-(alkoxycarbonyl) methylenetriphenylphosphoranes, while coupling with methyl 2-chloroacetacetate gives 2-[2-(methoxycarbonyl-chloromethyliden)hydrazino] -phenyl-glyoxylic acid.