Triphenylsulfonium Bromide → Triphenylsulfonium 1,1-difluoro-2-(2-methyl-acryloyloxy)-ethane-1-sulfonate

Participants

Reaction Steps

A 50 mL reactor was charged with the triethylammonium 1,1-difluoro-2-(2-methyl-acryloyloxy)-ethane-1-sulfonate aqueous solution obtained by the 3rd step, and a solution of 3.18 g (8.9 millimoles) of triphenylsulfonium bromide and 20 g of chloroform, followed by 3 hours of stirring at room temperature. Subsequently, an organic layer was separated, and the thus obtained organic layer was rinsed with 20 g of water four times. Subsequently, it was rinsed with 20 g of diisopropyl ether three times and then a volatile component was distilled off, thereby obtaining 3.92 g of a target triphenylsulfonium 1,1-difluoro-2-(2-methyl-acryloyloxy)-ethane-1-sulfonate. It exhibited a purity of 97% at this time, and a yield of 87% taken over from the 3rd step.

Provenance & Evidence