Cyclic organosilicon compounds : reaction of 1,4-dilithium-1,1,4,4-tetraphenylbutane with organodichlorosilanes

Cyclic organosilicon compounds were obtained by the coupling reaction of 1,4-dilithium-1,1,4,4-tetraphenylbutane and organochlorosilanes with general formula R'R"SiCl sub 2 (R' = methyl, R" = ethyl, phenyl, vinyl, p-tolyl). The chemical analysis, molecular weight determination, IR spectra have shown that new compounds have been formed by ring closure through a siloxane bond. The thermogravimetric analysis indicated a thermal stability of compounds up to 360 deg C. 45 ref.--AA