Competitive electrochemical thio- and selenenylation of chlorosilanes

Abstract

The anions PhS- and PhSe- obtained from cathodic reduction of diorganodichalcogenides, substitute Cl in trimethylchlorosilane with relative rates kSe/kS = 9.3 to give trimethylsilylphenylsulfide and trimethylsilylphenylselenide; this reaction, carried out in the presence of a carbonyl compound, results in trimethylsilyl ethers of hemithio-(seleno-)ketals and acetals. Copyright © 1996 Elsevier Science Ltd.