作者:Derek W. Nelson、Regina A. Easley、Beniamin N.V. Pintea
DOI:10.1016/s0040-4039(98)80010-5
日期:1999.1
New methods for perfluoroalkylation of carbon-nitrogen double bonds have been developed. Addition of (trifluoromethyl)trimethylsilane (TMSCF3) to alpha,N-diarylnitrones produced a series of alpha-(trifluoromethyl)-N-hydroxyl amines protected as their O-trimethylsilyl derivatives. An alternate procedure using pentafluoroethyllithium (F5C2Li) and chlorotrimethylsilane (TMSCl) afforded O-trimethylsilyl-alpha- (pentafluoroethyl)-N-hydroxyl amines. (C) 1998 Elsevier Science Ltd. All rights reserved.
<i>α</i>-(Trifluoromethyl)amine Derivatives via Nucleophilic Trifluoromethylation of Nitrones
作者:Derek W. Nelson、James Owens、Diana Hiraldo
DOI:10.1021/jo000685l
日期:2001.4.1
(Trifluoromethyl)trimethylsilane (TMSCF(3)) reacts with nitrones to afford alpha-(trifluoromethyl)hydroxylamines protected as O-trimethylsilyl ethers. Potassium t-butoxide initiates the nucleophilic trifluoromethylation. The reaction works best with alpha,N-diaryl nitrones, and the conditions are compatible with a range of substituents on the aryl groups. Acidic deprotection of the nitrone/TMSCF(3)