Conversion of Disilanes to Functional Monosilanes. XIII. The Palladium Catalyzed Reductive Coupling of Benzylidene Dichlorides and Benzylidyne Trichlorides Using Disilanes as Reducing Agents
作者:Hideyuki Matsumoto、Takeshi Arai、Masatoshi Takahashi、Toshiyuki Ashizawa、Taichi Nakano、Yoichiro Nagai
DOI:10.1246/bcsj.56.3009
日期:1983.10
The reaction of benzylidene dichlorides or benzylidyne trichlorides with 1,2-dichloro-1,1,2,2-tetramethyldisilane or hexamethyldisilane proceeded smoothly in the presence of acatalytic amount of Pd(PPh3)4 to give (E)-stilbenes or (E)- and (Z)-α,β-dichlorostilbenes in high yields, respectively. Also, in the presence of the palladium(0) catalyst, α,α-dichlorobenzyltrimethylsilanes reacted with hexamethyldisilane yielding (E)-α,β-bis(trimethylsilyl)stilbenes in quantitative yield.
在Pd(PPh3)4的催化作用下,苄叉二氯或苄叉三氯与1,2-二氯-1,1,2,2-四甲基二硅烷或六甲基二硅烷反应顺利进行,分别高产率地得到了(E)-芪或(E)-和(Z)-α,β-二氯芪。此外,在钯(0)催化剂的存在下,α,α-二氯苄基三甲基硅烷与六甲基二硅烷反应,以定量产率生成了(E)-α,β-双(三甲基硅基)芪。