An iodine-induced sulfonylation of quinoline-2-thiones with sodium arenesulfinates
as sulfur sources for the synthesis of 4-aryl-2-(arylsulfonyl)quinoline derivatives
is described. The 4-aryl-2-(arylsulfonyl)quinoline derivatives can be obtained in
a moderate to good yields. This C–S bond cleavage and C–S cross-coupling proceeds
in the absence of a metal under inexpensive and nontoxic conditions and it displays
a broad substrate scope.
Key words
C–S cross-coupling - quinolinethiones - arylsulfonylquinolines - C–S bond cleavage
- sodium sulfonate - iodine catalysis