METHOD OF INTRODUCTION OF SUBSTITUTED DIFLUOROMETHYL GROUP Russian patent published in 2002 - IPC

Abstract RU 2192414 C2

FIELD: chemical technology. SUBSTANCE: invention relates to method of introduction of substituted difluoromethyl group and compound comprising at least one electophilic group. Method involves the following stages: I) contact of the above- mentioned compound comprising at least one electophilic group with nucleophilic agent containing: a) fluorocarboxylic acid of the formula Ea-CF₂-COOH where Ea means atom or group showing electron-accepting properties and converted at least partially to salt form with organic or inorganic cation, and b) polar aprotonic solvent; and II) irradiation of reaction medium by microwave radiation. This ensures to obtain fluoro-containing sulfinic or sulfonic acids. EFFECT: improved method of introduction. 27 cl, 1 tbl, 8 ex

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RU 2 192 414 C2

Authors

Fora Zherar

Mas Zhan-Manuehl'

Sehn-Zhal'Me Loran

Dates

2002-11-10—Published

1997-07-30—Filed