Document Type and Number:
Japanese Patent JPS638092
Kind Code:
B2
Abstract:
A process for the preparation of compounds containing a difluoromethylene group in a position alpha to an oxygen atom. An alcohol or a phenol is brought into contact with trifluoroacetic acid or a halide or anhydride thereof in anhydrous liquid hydrofluoric acid, in the presence of boron trifluoride, in a quantity such that the absolute pressure of boron trifluoride is at least about one bar. The compounds obtained according to the invention are used as synthesis intermediates in the pharmaceutical, plant-protection, and dye industries, as anesthetics and as additives for lubricating oils.
Inventors:
MISHERU DEBOWA
Application Number:
JP28951485A
Publication Date:
February 19, 1988
Filing Date:
December 24, 1985
Export Citation:
Assignee:
ROONU PUURAN SUPESHIARITE SHIMIIKU
International Classes:
C07C41/16; B01J27/00; B01J27/12; C07B31/00; C07B39/00; C07B41/04; C07B41/12; C07B61/00; C07C41/00; C07C41/01; C07C41/22; C07C43/225; C07C43/247; C07C67/00; C07C69/63
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