Stereoselective Ir(iii)-catalyzed dimerization reaction of enynes: an entry to functionalized polyunsaturated and cyclic systems
作者:Mehdi Ez-Zoubir、Florent Le Boucher d'Herouville、Jack A. Brown、Virginie Ratovelomanana-Vidal、Véronique Michelet
DOI:10.1039/c0cc00721h
日期:——
The Ir(III) complex [Ir2H2I3((rac)-Binap)2]+I− efficiently promotes the selective dimerization of 1,6-, 1,7-enynes and functionalized alkynes. This catalytic process results in the formation of head-to-head isomers with (E)-stereoselectivity. Subsequent Rh-catalyzed cycloisomerization under reductive conditions led to the corresponding 1,2-dialkylidenecyclopentane derivatives.