$C{H}_{3}Cl+Si\underset{Catalyst,573K}{\overset{Cu}{\to }}\mathrm{Pr}oduct$

Which is formed in small amount (relatively).

When methyl chloride reacts with Silicon in the presence of copper as a catalyst at a temperature 573 K a small amount of Me₄Si is formed along with a mixture of mono, di and tri methylchloro silanes.

${\mathrm{CH}}_3\mathrm{Cl}+\mathrm{Si}\underset{570 \mathrm{K}}{\overset{\mathrm{Cu} \mathrm{powder}}{\to }}{\mathrm{CH}}_3{\mathrm{SiCl}}_3+{\left({\mathrm{CH}}_3\right)}_2{\mathrm{SiCl}}_2+{\left({\mathrm{CH}}_3\right)}_3\mathrm{SiCl}+{\left({\mathrm{CH}}_3\right)}_4\mathrm{Si}$