Concurrent preparation of dimethylchlorosilane and triorganochlorosilane

摘要

Dimethylchlorosilane and a triorganochlorosilane of the formula: R1R2R3SiCl wherein R1, R2, and R3 are independently selected from monovalent hydrocarbon groups are concurrently prepared by reacting dimethyldichlorosilane with a SiH bond-containing silane compound of the formula: R1R2R3SiH in the presence of a Lewis acid catalyst. The method is especially effective for concomitant preparation of dimethylchlorosilane and trimethylchlorosilane or t-butyldimethylchlorosilane in an inexpensive, simple, safe manner and in high yields.