Ring-Opening Reactions of Cyclopropenedicarboxylates with Organolithiums and Organozincs
作者:Yu Liu、Qiong Yu、Shengming Ma
DOI:10.1002/ejoc.201201588
日期:2013.5
Ring-openingreactions of cyclopropenedicarboxylates with organolithiums and organozincs have been studied. Organolithiums and dialkyl- or diphenylzincs afforded a series of 1-alkenyl malonates with attack occurring by the organic group from the organometallic reagent at the less substituted sp2-hybridized carbon of the cyclopropene moiety. Mechanistic studies proved both anion and dianion intermediates