One-Pot Synthesis of Fused Pyrroles through a Key Gold-Catalysis-Triggered Cascade
作者:Zhitong Zheng、Huangfei Tu、Liming Zhang
DOI:10.1002/chem.201304204
日期:2014.2.24
A two‐step, one‐pot synthesis of fusedpyrroles is realized by firstly condensing an N‐alkynylhydroxammonium salt with a readily enolizable ketone under mild basic conditions and then subjecting the reaction mixture to a gold catalyst, which triggers a cascade reaction involving a facile initial [3.3]‐sigmatropic rearrangement of the gold‐catalysis product, that is, an N,O‐dialkenylhydroxamine. The