Mild Electrophilic Trifluoromethylation of β-Ketoesters and Silyl Enol Ethers with 5-Trifluoro Methyldibenzothiophenium Tetrafluoroborate
作者:Jun-An Ma、Dominique Cahard
DOI:10.1021/jo034881e
日期:2003.10.1
to excellent yields. In a second approach, 5-trifluoromethyldibenzothiophenium tetrafluoroborate and tetrabutylammonium difluorotriphenylstannate were used for efficient electrophilic trifluoromethylation of various silyl enolethers leading to the corresponding alpha-trifluoromethyl ketones in good to high yields.