Reactions of the azobenzene-dilithium adduct with some substituted chloro compounds of silicon, germanium, tin and lead

Abstract

Treatment of the azobenzene-dilithium adduct with dichlorodimethylsilane gave 1,2,4,5-tetraphenyl-3,3,6,6-tetramethyl-1,2,4,5-tetraaza-3,6-disilacyclohexane. Similar reactions of dichlorodiethylsilane, dichloridibenzylsilane, dichlorophenylvinylsilane, and cyclopentamethylenedichlorosilane gave the corresponding cyclic compounds. Substituted silylhydrazines were obtained from the reaction of the azobenzene-dilithium adduct with chlorotrimethylsilane, chlorotriethylsilane, chlorodimethylphenylsilane and chlorodiphenylmethylsilane. Reaction of dichlorodiphenylgermane with the azobenzene-dilithium adduct gave octaphenyl-1,2,4,5-tetraaza-3,6-digermacyclohexane. Diphenyltin and azobenzene were obtained from the reaction of diphenyltin dichloride with the azobenzene-dilithium adduct; whereas, metallic lead and azobenzene were isolated from the corresponding reaction employing diphenyllead dichloride.