| 摘要 |
<p>Disclosed is a method for preparing an alpha , beta -unsaturated- beta -trifluoromethyl carboxylate of the formula: <CHEM> wherein X is selected from OR<3>and NR<3>R<4> comprising contacting a compound of the formula: <CHEM> with a base to produce the alpha , beta -unsaturated compound. The starting material can be prepared by acylating a compound of the formula: <CHEM> In the above formulas, R,R<1>,R<2>,R<3> and R<4> have the meanings given in the description.</p> |
