作者:Zachary D. Miller、Ruth Dorel、John Montgomery
DOI:10.1002/anie.201503521
日期:2015.7.27
regiodivergent hydrosilylation of 1,3‐disubstituted allenes have been developed. The synthesis of E allylsilanes is accomplished with palladium NHC catalysts, and trisubstituted Z alkenylsilanes are accessed with nickel NHC catalysts. Unsymmetrically substituted allenes are well tolerated with nickel catalysis and afford Z alkenylsilanes. Evidence for a plausible mechanism was obtained through an isotopic
已经开发出高度立体选择性和区域分异的1,3-二取代的烯丙基氢化硅烷化的方法。E 烯丙基硅烷的合成是用钯NHC催化剂完成的,三取代的Z 烯基硅烷是用镍NHC催化剂获得的。镍催化可很好地耐受不对称取代的烯,并提供Z 链烯基硅烷。通过同位素双标记交叉研究获得了合理机制的证据。