论文部分内容阅读
We report a highly efficient substitution reaction of 3-hydroxyoxindoles 1 using TMSN3 to furnish 3-substituted 3-azidooxindoles as the precursor of quaternary 3-aminooxindoles.Under the condition of using Ga(OTf)3 as the Lewis acid catalyst and acetonitrile as the solvent,a variety of differently substituted 3-aryl 3-hydroxyoxindoles work well with TMSN3 to provide the corresponding 3-aryl 3-azidooxindoles in good to excellent yield.