Silver-Catalyzed Highly Regioselective Synthesis ofα-Carbonyl Furans from Enynones
摘要:
A general and efficient method for the synthesis of a wide range of alpha-carbonyl furans is described here. The cyclization of enynone is catalyzed by AgBF4 in a fluorous biphasic system of perfluorodecalin and N,N-dimethylformamide. A variety of chain ketone and cyclic ketone substrates were used to investigate the scope of the reactions.
Ytterbium and silver co-catalyzed synthesis of pyrrole-fused bicyclic skeletons from enynones and isocyanides
作者:Feng Li、Peng Hu、Mingming Sun、Chunju Li、Xueshun Jia、Jian Li
DOI:10.1039/c8cc03475c
日期:——
An unusual cascade reaction of isocyanide and enynone using Yb/Ag cooperative catalysis as a key step has been disclosed. The present strategy enables the double isocyanide insertion and subsequent 5-endo-dig cyclization, thus providing a quick access to structurally complex pyrrole-fused heterocycles.