Synthesis of Alkylidenecyclopentenones via the Coupling of Propargyl Alcohol Derivatives with Cyclopropylcarbene−Chromium Complexes
作者:James W. Herndon、Jin Zhu
DOI:10.1021/ol990002s
日期:1999.7.1
The coupling of propargylic alcohols and their derivatives with cyclopropylcarbene-chromium complexes has been investigated. The coupling reaction leads to alkylidenecyclopentenones or alkoxyalkylcyclopentenones, depending on the leaving group ability of the propargyl substituent. A mechanism involving formation of a cyclpentadienone, followed by reduction and beta-elimination, was proposed.