Preparation of Tetraalkylsilanes from Trichloromethylsilane and Trioctylaluminum
作者:Edward T. Sabourin、Anatoli Onopchenko
DOI:10.1246/bcsj.62.3691
日期:1989.11
The synthesis of methyltrioctylsilane has been achieved in a single-step from commercially available trichloromethylsilane and trioctylaluminum. Co-products resulting from alkyl group redistribution are minimized by addition of sodium or lithium halides. Use of potassium or rubidium halides drastically changes the course of the reaction to produce methyldioctylsilane as the major product.
Production of saturated and unsaturated silahydrocarbon mixtures using
申请人:Gulf Research & Development Company
公开号:US04572791A1
公开(公告)日:1986-02-25
The silahydrocarbon product containing at least 75 weight percent of saturated silahydrocarbons with the remainder being unsaturated silahydrocarbons is produced by a process in which admixture comprising (A) at least one alpha-olefin containing from 2 to about 20 carbon atoms per molecule, and (B) at least one alkylsilane selected from the group consisting of (i) a dialkylsilane having the formula R--SiH.sub.2 --R.sub.1 (ii) a trialkylsilane having the formula ##STR1## and (iii) mixtures thereof, wherein R and R.sub.1, the same or different, each represent an alkyl radical of from one to 20 carbon atoms per molecule with a catalyst comprising a homogeneous rhodium-containing catalyst or a heterogeneous rhodium-containing catalyst in a halogen-free inert solvent, under hydrosilylation reaction conditions to produce a mixture containing saturated and unsaturated silane hydrocarbons useful as lubricants. The unsaturated silane hydrocarbons can be substituted with sulfur to provide improved lubricating characteristics.