Palladium-Catalyzed Cross-Coupling Reaction of Triorganoindium Reagents with Propargylic Esters
作者:Ricardo Riveiros、David Rodríguez、José Pérez Sestelo、Luis A. Sarandeses
DOI:10.1021/ol060192o
日期:2006.3.1
[reaction: see text] Triorganoindium reagents (R(3)In) react with propargylic esters under palladium catalysis via an S(N)2' rearrangement to afford allenes in good yields and with high regioselectivity. The reaction proceeds smoothly at room temperature with a variety of R(3)In (aryl, alkenyl, alkynyl, and methyl). When chiral, nonracemic propargylic esters are employed, the reaction takes place with
[反应:见正文]在钯催化下,三有机铟试剂(R(3)In)通过S(N)2'重排与炔丙基酯反应,从而以高收率和高区域选择性提供丙二烯。反应在室温下与各种R(3)In(芳基,烯基,炔基和甲基)平稳进行。当使用手性,非外消旋的炔丙基酯时,该反应以高的抗立体选择性进行,从而提供了具有高对映体过量的丙二烯。