Abstract In the presence of lithium and in tetrahydrofuran as solvent, trimethylchlorosilane reacts at 0–10 C, in an inert atmosphere, with monoaromatic mono-or disubstituted hydrocarbons, to give the corresponding 1, 4-disilyl derivatives. In the case of ortho-xylene and cumene, disilylation is accompanied by tetrasilylation, whereas phenyltrimethylsilane can lead to the tetrasilylated derivative in quantitative yields.
