Efficient Regioselective Synthesis of Novel Ensembles of Organylselanyl-Functionalized Divinyl Sulfides and 1,3-Thiaselenoles under Phase Transfer Catalysis Conditions

Abstract

Efficient regioselective synthesis of novel ensembles of organylselanyl-functionalized 1,3-thiaselenoles and divinyl sulfides in high yields under phase transfer catalysis conditions was developed. The methodology is based on the generation of sodium [(Z)-2-(vinylsulfanyl)ethenyl]selenolate and 1,3-thiaselenol-2-ylmethylselenolate, which were involved in a nucleophilic addition reaction with activated alkenes such as acrylonitrile, acrylamide, methyl vinyl ketone, methyl, and ethyl acrylates. In the case of methyl vinyl ketone, the reaction was accompanied by the hydrogenation of the carbonyl group. Methylene chloride was involved in the nucleophilic substitution reaction with sodium [(Z)-2-(vinylsulfanyl)ethenyl]selenolate and 1,3-thiaselenol-2-ylmethylselenolate to afford new polyunsaturated compounds with several sulfur and selenium atoms.