vinylsilanes via the anti-selective addition of a novel solid Me3SiZnI to terminal alkynes. An equilibrium exists between the intermediate syn- and anti-adducts, where the anti-selectivity is determined by the larger barrier at the single electron reduction of alkyl halides and the thermodynamic stability of the Ni(III) adduct.
这项研究提出了一种独特的方法,通过将新型固体 Me 3 SiZnI 反选择性加成到末端
炔烃上,选择性合成立体定义的三取代
乙烯基硅烷。中间顺式加合物和反式加合物之间存在平衡,其中反选择性由烷基卤化物单电子还原时的较大势垒和 Ni(III) 加合物的热力学稳定性决定。