Gold-catalyzed synthesis of nitrogen-containing heterocycles from ε-N-protected propargylic esters
作者:Jianfeng Huang、Xuan Huang、Bo Liu
DOI:10.1039/c003734f
日期:——
A mild and efficient gold-catalyzed tandem cyclization to piperidinyl enol esters has been developed with facilely available ε-N-Boc-protected propargylicesters.
[Bis(trifluoroacetoxy)iodo]p-nitrobenzene and [Bis(trifluoroacetoxy)iodo]pentafluorobenzene as Lead Reagents for the Direct Ring Contraction of Lactams to Pyrrolidines