Stereoselective synthesis of (E)-α-aryltellurenylvinylsilanes via hydromagnesiation reaction of alkynylsilanes
作者:Mingzhong Cai、Wenyan Hao、Hong Zhao、Jun Xia
DOI:10.1016/j.jorganchem.2004.02.027
日期:2004.5
(E)-α-Aryltellurenylvinylsilanes have been synthesized stereoselectively via the hydromagnesiation of alkynylsilanes, followed by the reaction with aryltellurenyl iodides. (E)-α-Aryltellurenylvinylsilanes can undergo the cross coupling reaction with Grignard reagents in the presence of Ni(PPh3)2Cl2 catalyst to afford (Z)-1,2-disubstituted vinylsilanes in good yields.
(E)-α-芳基tellurenyl乙烯基硅烷已经通过炔基硅烷的加氢放大作用立体选择性地合成,然后与芳基碲烯基碘化物反应。在Ni(PPh 3)2 Cl 2催化剂的存在下,(E)-α-芳基碲烯基乙烯基硅烷可以与格氏试剂进行交叉偶联反应,以高收率得到(Z)-1,2-二取代的乙烯基硅烷。