A facile stereoselective synthesis of (E)-α-silylvinylstannanes via hydromagnesiation of alkynylsilanes
作者:Mingzhong Cai、Wenyan Hao、Hong Zhao、Jun Xia
DOI:10.1016/j.jorganchem.2004.07.063
日期:2004.11
(E)-α-Silylvinylstannanes have been synthesized by the hydromagnesiation reaction of alkynylsilanes, followed by the reaction with trialkylstannyl chlorides. (E)-α-Silylvinylstannanes can undergo the cross-coupling reaction with aryl iodides in the presence of a catalytic amounts of Pd(PPh3)4 and CuI to afford (Z)-1,2-disubstituted vinylsilanes in good yields.
(E)-α-甲硅烷基乙烯基锡烷是通过炔基硅烷的加氢放大反应,然后与三烷基锡烷基氯反应而合成的。(E)-α-甲硅烷基乙烯基锡可以在催化量的Pd(PPh 3)4和CuI存在下与芳基碘化物进行交叉偶联反应,以高收率得到(Z)-1,2-二取代乙烯基硅烷。