Difluoroenol silyl ethers 5 and 6, difluoroketene silyl (O,O-, O,S-, and O,N-) acetals 9 and 21, and 2,2-difluoro-2-trimethylsilylacetates 10 were prepared by electroreductive defluorination of trifluoromethyl ketones and trifluoroaceticacidderivatives in an MeCN-TBAB-chlorotrialkylsilane system using a carbon rod as an anode and a lead plate as a cathode. TBAF- or KF-CuI-promoted alpha-alkylation
Facile synthesis of α-trifluoromethylated alcohols from trifluoroacetaldehyde ethyl hemiacetal
作者:Toshio Kubota、Masahiro Iijima、Tatsuo Tanaka
DOI:10.1016/s0040-4039(00)91620-4
日期:1992.3
Trifluoroacetaldehyde ethylhemiacetal reacted with nucleophilic organosilanes such as cyanotrimethylsilane, allyltrimethylsilane, or enol trimethylsilyl ethers in the presence of Lewis acid to afford a series of α-trifluoromethylated alcohols in high yield.