Abstract
3-Polyfluoroalkyl-( E)-cinnamic acids being very useful building blocks were obtained by a simple and convenient one-step procedure. The Perkin type reaction of fluoroacyl-substituted arenes gives the titled compounds in good yields and excellent stereoselectivity independent on the electronic nature of substituents in the aromatic ring. In the case of fluoroalkyl–alkylketones only O-acylation occures under the same conditions.
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