Institute of Chemistry, Academia Sinica, Nangang, Taipei, Taiwan, Republic of China.
Org Lett. 2012 Apr 20;14(8):2046-9. doi: 10.1021/ol300570f. Epub 2012 Apr 5.
We have disclosed a new mode of a chemically regioselective switch for C-H bond functionalization of benzimidazole derivatives via a cooperative effect invoked by Ni-Al bimetallic catalysis to create a steric requirement for obtaining the linear product of styrene insertion. Yet, excluding the AlMe(3) cocatalyst switches the reaction toward branch selectivity.
我们揭示了一种新的模式,通过 Ni-Al 双金属催化引发的协同效应,实现苯并咪唑衍生物 C-H 键功能化的化学区域选择性开关,为获得苯乙烯插入的线性产物创造了空间位阻要求。然而,排除 AlMe(3)共催化剂会使反应转向支链选择性。