Direct synthesis of bis (chlorosily) methanes has been reinvestigated by reacting elemental silicon simultaneously with methylene chloride and hydrogen chloride in the presence of copper catalyst using a stirred reactor equipped with a spiral band agitator at a carefully controlled temperature between 260 and 340° C. Bis (dichlorosily) methane and (dichlorosily)(trichlorosily) methane were obtained as the major products and bis ( ...
