N-Fluoro-N-alkylsulfonamides: useful reagents for the fluorination of carbanions
作者:W. E. Barnette
DOI:10.1021/ja00314a050
日期:1984.1
Electrolytic Partial Fluorination of Organic Compounds. 17. Regiospecific Anodic Fluorination of Sulfides Bearing Electron-Withdrawing Substituents at the Position .alpha. to the Sulfur Atom
Regiospecific monofluorination of various sulfides bearing electron-withdrawing substituents, cyano, ester, acyl, amino, and phosphonate groups,at their alpha-positions was successfully carried out by the anodic oxidation of the sulfides in Et(3)N . 3HF/MeCN using an undivided cell. Fluorine was introduced at the position alpha to the sulfur atom selectively. Fluorination of alpha-(phenylthio)-substituted cyclic carbonyl compounds was also successful. Furthermore, anodic alpha,alpha-difluorination of ethyl alpha-(phenylthio)acetate was also successfully carried out although a large amount of electricity was required.
BARNETTE, W. E., J. AMER. CHEM. SOC., 1984, 106, N 2, 452-454