A visible-light-induced desulfonylative Giese-type reaction has been developed. Essential to the success is the employment of Hantzsch ester to activate benzothiazole sulfones without any heavy-metal additives. Not only benzylic benzothiazole sulfones but also alkyl ones were viable substrates and reacted with electron-deficient alkenes and a propiol amide.
in pharmaceuticals and as crop protection agents, are generated using a fluoro-Julia-Kocienski olefination. Their preparation can easily be accomplished using a Mitsunobu reaction and subsequent oxidation to generate the required benzothiazolyl sulfones. The key step of this process was the electrophilic α-fluorination of the sulfone with N-fluorobenzenesulfonimide. The last stage of the successful