Activation of the P–H bond by a frustrated Lewis pair and its application in catalytic Z-selective hydrophosphonylation of terminal ynones
作者:Yizhen Liu、Xiaoting Fan、Zhen Hua Li、Huadong Wang
DOI:10.1039/c7cc05028c
日期:——
The frustrated Lewis pair (FLP) comprised of B(C6F5)3 and 1,2,2,6,6-pentamethylpiperidine (PMP) can efficiently catalyze Z-selective hydrophosphonylation of terminal ynones with Z/E selectivity up to 20:1. Mechanism studies suggest that trans arrangement of the phosphite nucleophilic attack and hydrogen bond formation on the alkyne moiety is responsible for the observed Z-selectivity.
由B(C6F5)3和1,2,2,6,6-五甲基哌啶(PMP)组成的沮丧Lewis对(FLP)可以有效催化Z / E选择性高达20:1的末端炔酮的Z选择性氢膦酰化反应。机理研究表明,亚磷酸酯亲核攻击的反式排列和炔部分上的氢键形成是所观察到的Z选择性的原因。