Studies on the Cu(I)-Catalyzed Regioselective <i>anti</i>-Carbometallation of Secondary Terminal Propargylic Alcohols
作者:Zhan Lu、Shengming Ma
DOI:10.1021/jo0524021
日期:2006.3.31
A highly regioselective Cu(I)-catalyzed anti-carbometallation of secondary terminal propargylic alcohols with 1° alkyl or aryl Grignard reagents affording 2-substituted allylic alcohols was developed. By using this method, optically active allylic alcohols can be prepared from the optically active propargylic alcohols without obvious loss of the enantiopurity. The cyclic organometallic intermediate
开发了高度区域选择性的Cu(I)催化的仲末端炔丙基醇与提供2个取代的烯丙基醇的1°烷基或芳基格氏试剂的抗碳金属化反应。通过使用该方法,可以从旋光的炔丙醇制备旋光的烯丙醇而对映体纯度没有明显的损失。形成的环状有机金属中间体可以进行碘化反应或Pd(0)催化的偶联反应,得到立体定义的烯丙基醇。