| abstract |
Disclosed is a method for preparing an α,β-unsaturated-β-trifluoromethyl carboxylate of the formula:n wherein X is selected from OR 3 and NR 3 R 4 ncomprising contacting a compound of the formula:n with a base to produce the α,β-unsaturated compound. n The starting material can be prepared by nacylating a compound of the formula:n n In the above formulas, R,R 1 ,R 2 ,R 3 and R 4 have the meanings given in the description. |