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
作者:BARNETTE, W. E.
DOI:——
日期:——
US4479901A
申请人:——
公开号:US4479901A
公开(公告)日:1984-10-30
Direct α-Fluorination of Ketones Using N-F Reagents
作者:Stojan Stavber、Marjan Jereb、Marko Zupan
DOI:10.1055/s-2002-35625
日期:——
bis(tetrafluoroborate) (Accufluor NFTh) as a fluorine atom transfer reagent and methanol as solvent enabled direct regiospecific fluorofunctionalization of the u-carbonyl position in ketones without prior activation of the target molecules. Methoxy or hydroxy substituted derivatives of 1-indanone, 1-tetralone and oxo derivatives of thiophene, benzo[b]thiophene, benzofuran and benzopyran were regiospecifically