Method for the preparation of difluoromethoxyaromatic compounds

Details Method for the preparation of difluoromethoxyaromatic compounds Method for the preparation of difluoromethoxyaromatic compounds

C - Chemistry, Metallurgy

07

C

260/611.1, 260/4

C07C 43/225 (2006.01) C07C 41/16 (2006.01) C07C 69/736 (2006.01) C07C 201/12 (2006.01) C07C 205/37 (2006.01)

Patent

CA 1203548

A METHOD FOR THE PREPARATION OF DIFLUOROMETHOXYAROMATIC COMPOUNDS ABSTRACT OF THE DISCLOSURE A method for the preparation of certain difluoro- methoxyaromatic compounds which are useful intermediates for the preparation of pyrethroid pesticides. The method comprises alkylating a ?-substituted phenol with excess chlorodifluoromethane at atmospheric and superatmospheric pressures in the presence of a base, acetone, benzyltri- ethylammonium chloride, and water.

435106

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