Abstract
Abstract In the presence of catalytic amounts of sodium sulfate or sodium chloride, fluorosulfonyldifluoroacetic acid (1) was decarboxylated in CH3CNH2O to give difluoromethanesulfonyl fluoride (2) in moderate yield. 2 can be completely hydrolyzed to the corresponding acid 3 at 80°–100°C. The overall yield of 3 from 1 was 53%.
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