hydrogenchloride; n-Bu4PCl in N-dodecane T=20°C; 1 h;

''catalyst: tetrabutylphosphonium chloride'' in N-dodecane byproducts: bis(chlorosilyl)methane; bubbling of anhyd. HCl into stirred mixt. of tris(trichlorosilyl)methane, Bu4PCl and n-dodecane at room temp. for 1 h;