Chemical process for manufacturing trifluoroacetaldehyde hydrate or trifluoroacetalde hemiacetal
AssigneeImperial Chemical Industries PLC
InventorStanley A. Lee
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Abstract
A process for the manufacture of trifluoroacetaldehyde, or a hydrate or hemiacetal thereof, which comprises reduction of an ester of trifluoroacetic acid with a borohydride reducing agent in a hydroxylic solvent to form trifluoroacetaldehyde hydrate or hemiacetal; whereafter if the free aldehyde is required, water or alcohol is removed from the hydrate or hemiacetal respectively using conventional procedures.
Claims11
A process for the manufacture of trifluoroacetaldehyde hydrate or a trifluoroacetaldehyde hemiacetal, which comprises reduction of a (1-6C)alkyl ester of trifluoroacetic acid with up to 3 equivalents of an alkali metal borohydride, in a hydroxylic solvent which comprises water, a lower alcohol or a mixture thereof, at a temperature of up to 30.degree. C.
A process for the manufacture of trifluoroacetaldehyde hydrate, which comprises reduction of a (1-4C)alkyl ester of trifluoroacetic acid with about one equivalent of sodium borohydride in a hydroxylic solvent which comprises water at a temperature in the range of from -10.degree. to 10.degree. C.
Dependencies are inferred from the claim text.