An Alternative Mechanism for the Cobalt-Catalyzed Isomerization of Terminal Alkenes to (<i>Z</i>)-2-Alkenes
作者:Anastasia Schmidt、Alexander R. Nödling、Gerhard Hilt
DOI:10.1002/anie.201409902
日期:2015.1.12
The cobalt‐catalyzed selective isomerization of terminal alkenes to the thermodynamically less‐stable (Z)‐2‐alkenes at ambient temperatures takes place by a new mechanism involving the transfer of a hydrogen atom from a Ph2PH ligand to the starting material and the formation of a phosphenium complex, which recycles the Ph2PH complex through a 1,2‐H shift.
在环境温度下,末端烯烃钴催化选择性异构化为热力学上较不稳定的(Z)-2-烯烃是通过一种新机制进行的,该机制涉及将氢原子从Ph 2 PH配体转移至起始原料和complex络合物的形成,可通过1,2-H转变来回收Ph 2 PH络合物。