Dialkyl-3,3 Germa-3 Thietannes: Synthese et Reactivite

Abstract

Various 3, 3-dialkyl 3-germa thietanes have been prepared by treating bis(halomethyl) dialkylgermaniums with Na₂S or H₂S in the presence of Et₃ N, or by selectively desulphurizing 4-germa 1,2-dithiolanes. Cleavage of the Ge-C bond of these 3,3-dialyl 3-germa thietanes by a few polar reagents leads to the formation of α functional germylated sulphurs. C‒S bond opening is observed with IMe. Ethylchlorogermylene reacted with 3,3-dimethyl 3-germathietane giving insertion into the C‒S bond and formation of the ring expansion adduct.