A Versatile Route to 2-Substituted Cyclic 1,3-Dienes via a Copper(I)-Catalyzed Cross-Coupling Reaction of Dienyl Triflates with Grignard Reagents
作者:A. Sofia E. Karlström、Magnus Rönn、Atli Thorarensen、Jan-E. Bäckvall
DOI:10.1021/jo971737i
日期:1998.4.1
A general synthesis of 2-substituted cyclic1,3-dienes in two steps from alpha,beta-unsaturated ketones has been developed. Formation of a dien-2-yl triflate followed by a copper(I)-catalyzed cross-coupling reaction with a Grignard reagent gives 2-substituted dienes in fair to excellent yields. Alkyl, aryl, and allyl Grignard reagents can be used.