pylamino)-silane, diphenyldi-(n-hexylamino)-silane and diphenyldi-(benzylamino)-silane. The starting material, diphenyldichlorosilane, was prepared from diphenyldiethoxysilane and benzoyl chloride. Pyridine was used as a catalyst8 as quinoline was not satisfactory in this case. 9 The reaction of diphenyldichlorosilane with ammonia was carried out under various conditions: a solution of diphenyldichlorosilane in dry ether was added to liquid ...