In the presence of a catalytic amount of triphenylphosphine, 1, 1, 2, 2-tetrachloro-1, 2- dimethyldisilane reacted smoothly under mild conditions with carbon tetrachloride to produce (trichloromethyl) methyldichlorosilane 1 in good yield.(Trichloromethyl) dimethylchlorosilane was also readily prepared by the triphenylphosphine-promoted transfer of the trichloromethyl group from 1 to dimethyldichlorosilane.
