Stereoselective Synthesis of (Z)-1-Alkylseleno-1-alkenes by Ni-Catalyzed Coupling Reaction of (Z)-Dialkylselenoethenes with Organozinc Halides
作者:Xian Huang、Ai Ming Sun
DOI:10.1080/00397919708004142
日期:1997.8
(Z)-Dialkylselenoethenes 2, prepared conveniently from the hydrozirconation of dialkylselenoacetylenes 1 with Cp2Zr (H) Cl in THF followed by protonolysis, react readily at − 10°C in THF with organozinc halides in the presence of a catalytic amount of NiCl2 (dppe) to give (Z)-1-alkylseleno-1-alkenes 3 with retention of the configuration.
摘要 (Z)-二烷基硒代乙烯 2,由二烷基硒代乙炔 1 与 Cp2Zr (H) Cl 在 THF 中的氢锆化和质子分解方便地制备,在 - 10°C 下在 THF 中与有机锌卤化物在催化量的 NiCl2 存在下很容易反应( dppe) 得到 (Z)-1-烷基硒基-1-烯烃 3 并保留构型。