Cobalt(II)-Catalyzed Electrophilic Alkynylation of 1,3-Dicarbonyl Compounds To Form Polysubstituted Furans<i>via</i>π-π Activation
作者:Irwan Iskandar Roslan、Jiulong Sun、Gaik-Khuan Chuah、Stephan Jaenicke
DOI:10.1002/adsc.201400857
日期:2015.3.9
Polysubstituted furans were obtained with excellent yields via the electrophilic alkynylation of 1,3‐dicarbonyl compoundsws with phenyl‐ or ester‐substituted brominated alkynes. The reaction is catalyzed by the inexpensive and readily available catalyst, cobalt(II) chloride, and has a wide substrate scope. The C(sp)C(sp3) coupling occurs under mild conditions with short reaction times and does not