Study on the one-step synthesis of tetraallylsilane

Tetraallylsilane was synthesized by one-step approach through the reaction of silicon tetrachloride with the partially solvated Grignard reagents formed in situ from allyl bromide and magnesium in the mixed solvents of toluene and ether. The yield was 91% when the molar ratio of diethyl ether and allyl bromide was 4 (meanwhile, V_toluene/V_ether = 1.1). The yield was also around 63% when using THF instead of diethyl ether (V_toluene/ V_THF = 1-7). This one-step approach proved promising for the industrial production due to the high yield and the low cost.