Document Type and Number:
Japanese Patent JPS6340773
Kind Code:
B2
Abstract:
A process for the preparation of compounds containing a difluoromethylene or trifluoromethyl group. A compound containing a carbonyl group, preferbly an acid, acid halide, amide, ketone or any compound containing a perhaloalkylcarbonyl moiety is placed, in anhydrous liquid hydrofluoric acid, in contact with boron trifluoride in a quantity such that the absolute pressure of boron trifluoride in the reaction system is at least one bar for a time sufficient to convert the carbonyl group to a difluormethylene or trifluoromethyl group. The compounds obtained are useful as synthesis intermediates in the pharmaceutical, plant-protection and dye industries, as anesthetics or as heat-transfer and lubricating fluids.
Inventors:
MISHERU DEBOWA
Application Number:
JP28951585A
Publication Date:
August 12, 1988
Filing Date:
December 24, 1985
Export Citation:
Assignee:
ROONU PUURAN SUPESHIARITE SHIMIIKU
International Classes:
C07C43/205; B01J27/00; B01J27/12; C07B31/00; C07B39/00; C07C17/00; C07C17/093; C07C17/18; C07C19/08; C07C19/10; C07C19/12; C07C21/18; C07C22/02; C07C22/08; C07C25/13; C07C41/00; C07C41/22; C07C43/225; C07C51/00; C07C63/68; C07C67/00; C07C201/12; C07C205/11
Previous Patent: An analysis device which can manage a parameter change history
Next Patent: RUBBER COMPOSITION
Next Patent: RUBBER COMPOSITION