1. N,N-Bis(trifluoromethanesulfonyl)aniline (N-phenyltriflimide) is perhaps the most popular tool for transfer of a triflyl group to an enolate oxygen, although N-(5-chloro-2-pyridyl)triflimide and N-(2-pyridyl)triflimide appear to be more efficient at low temperature; see ref.[4b] and references cited therein.
2. According to recent catalogues of chemical suppliers, the prices of these aryl triflimides are approximately 5−15 times higher than that of Tf2O.
3. Palladium-catalyzed olefination of vinyl triflates
4. Olefin synthesis via organometallic coupling reactions of enol triflates