α,α-Difluoroalkanecarboxylic acids: A general synthesis via alkyl radical addition to 1,1-dichloro-2,2-difluoroethylene

Article abstract of DOI:10.1016/S0040-4039(00)92671-6

Photodecomposition of alkanoic acid esters of N-hydroxy-2-thiopyridone with 1,1-dichloro-2,2-difluoroethylene gives alkyl-radical-trapped products, which give α,α-difluoroalkanoic acids and their methyl esters on hydrolytic or methanolytic treatment with silver nitrate.