Tris(silyl)methanes and their preparation methods

Abstract

The present invention relates to a process for preparing tris(silyl)methanes by directly reacting a mixture of .alpha.-dichloromethylsilanes represented in formula I and hydrogen chloride or alkyl chlorides represented in formula II, with silicon metal to give the tris(silyl)methanes having two dichlorosily groups (formula III), the tris(silyl)methanes having one trichlorosilyl group and one dichlorosilyl group (formula IV), and the tris(silyl)metranes having two trichlorosilyl groups (formula V) in moderately high yields in the presence of copper catalyst at a temperature from 250.degree. C. to 350.degree. C. ##STR1## Wherein R represents hydrogen, alkyl(C.sub.1 -C.sub.4), or CH.sub.2 CH.sub.2 Cl, and R.sub.1, R.sub.2, and R.sub.3 represent independently hydrogen or chloride.

Dependencies are inferred from the claim text.