Patent ID: 7053248

Claim:
A process for producing a trifluoromethyl-substituted 2-alkoxyacetophenone derivative represented by the formula 9, comprising the steps of: (a) brominating a trifluoromethyl-substituted acetophenone, represented by the formula 1, by Br 2 in the presence of an acetalization agent that is an alkylene diol represented by the formula 2, thereby preparing a brominated acetal represented by the formula 3; (b) reacting the brominated acetal with a metal alkoxide represented by the formula 7, thereby converting the brominated acetal into an ether represented by the formula 8; and (c) hydrolyzing the ether in the presence of an acid catalyst to remove an acetal group from the ether, thereby producing the 2-alkoxyacetophenone derivative, where m represents 1 or 2, where n represents an integer of from 2 to 4, where m and n are respectively defined as in the formulas 1 and 2, R 1 OM [7] where R 1 represents an alkyl group having a carbon atom number of from 1 to 4, and M represents Li, Na or K, where m, n and R 1 are respectively defined as in the formulas 1, 2 and 7, where m and R 1 are respectively defined as in the formulas 1 and 7.