METHOD FOR THE PREPARATION OF DIFLUOROMETHOXYAROMATIC COMPOUNDS
A METHOD FOR THE PREPARATION OF DIFLUORO METHOXYAROMATIC COMPOUNDS A method for the preparation of certain difluoromethoxyaromatic compounds useful as intermediates in the preparation of pyrethroid pesticides. The method comprises alkylating a p-substituted phenol with excess chlorodifluoromethane a...
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| Format: | Patent |
| Sprache: | eng ; fre |
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| Zusammenfassung: | A METHOD FOR THE PREPARATION OF DIFLUORO METHOXYAROMATIC COMPOUNDS A method for the preparation of certain difluoromethoxyaromatic compounds useful as intermediates in the preparation of pyrethroid pesticides. The method comprises alkylating a p-substituted phenol with excess chlorodifluoromethane at atmospheric or superatmospheric pressures in the presence of a base, water, and an inert water miscible organic solvent or solvent mixtures. |
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