alkyl iodides, sulfur dioxide, and electron-deficient alkenes undermildconditions is achieved. This reaction proceeds through alkyl radicals formed in situ from alkyl iodides undervisiblelight irradiation in the presence of a photoredox catalyst. The alkyl radical intermediates would react with sulfur dioxide leading to alkylsulfonyl radicals, which would be trapped by electron-deficient alkenes giving
Metal-free synthesis of γ-ketosulfones through Brønsted acid-promoted conjugate addition of sulfinamides
作者:Nicolas Gigant、Sami Kayal、Emmanuelle Drège、Delphine Joseph
DOI:10.1039/d3ra08675e
日期:——
A straightforward and general metal-free method has been developed to add sufinamide-derived sulfone units on Michael acceptors under mild conditions. This reaction enables the preparation of a large variety of original γ-ketosulfones, of which only a few synthetic methods have been reported. The mild reaction conditions used tolerate a wide diversity of functional groups and empower the implementation