616863-17-3Relevant academic research and scientific papers
Triflic anhydride-promoted cyclization of sulfides: A convenient synthesis of fused sulfur heterocycles
Shevchenko, Nikolay E.,Nenajdenko, Valentine G.,Balenkova, Elizabeth S.
, p. 1191 - 1200 (2003)
A new approach to the synthesis of annulated sulfur heterocycles based on triflic anhydride-promoted cyclization of the hetaryl(aryl) containing alkyl sulfides was elaborated. Smooth demethylation of initially formed cyclic sulfonium salts by treatment with triethylamine afforded a number of five-, six- and seven-membered fused sulfur heterocycles. Unexpected ring opening took place in the reaction of diethylamine with 5-membered sulfonium salts.
