R3SiMgMe and MnCl2 are disclosed. (1) The manganese species reacted with terminal acetylenes to give 1,2-disilylated 1-alkenes. Mono- and bis(trimethylsilyl) acetylenes gave tri- and tetrasilylated ethenes, respectively, in good yields. Highly strained tetrakis(trimethylsilyl) ethene has now become easily accessible by this technique. (2) The reaction of alkenyl halides, alkenyl sulfides, and enol phosphates
Palladium(II) acetate-tert-alkyl isocyanide as a highly efficient catalyst for the inter- and intramolecular bis-silylation of carbon-carbon triple bonds
Poly(silvinylene)s and a process for their preparation
申请人:Shin-Etsu Chemical Co., Ltd.
公开号:US05068381A1
公开(公告)日:1991-11-26
A process for preparing a poly(silvinylene) represented by the following general formula [III]: ##STR1## characterized in that (A) a polysilane represented by the following general formula [I]: ##STR2## and (B) an acetylene represented by the following general formula [II]: R.sup.5 --C.ident.C--R.sup.6 tm [II] are reacted in the presence of a catalyst comprising an isocyanide compound and a palladium compound. This poly(silvinylene) is useful as a photosensitive material and a crosslinking agent. This poly(silvinylene) is obtained generally in high yield irrespective of the type of the substituent possessed by the silane that is a raw material.