Enantiospecific Intramolecular Heck Reactions of Secondary Benzylic Ethers
作者:Michael R. Harris、Mikhail O. Konev、Elizabeth R. Jarvo
DOI:10.1021/ja5026485
日期:2014.6.4
Enantioenriched methylenecyclopentanes are synthesized by stereospecific, nickel-catalyzed Heck cyclizations of secondary benzylic ethers. The reaction proceeds in high yield and enantiospecificity for benzylic ethers of both π-extended and simple arenes. Ethers with pendant 1,2-disubstituted olefins form trisubstituted olefins with control of both absolute configuration and alkene geometry. Diastereoselective