| abstract |
PURPOSE: To produce the titled compound efficiently, by halogenating an aqueous solution of a water-soluble metallic salt of hexafluoro-α-hydroxyisobutanoic acid obtained from octafluoroisobutene or an adduct thereof with an alcohol in the presence of a Ni salt. n CONSTITUTION: Octafluoroisobutene expected to be effectively used or an adduct thereof with an alcohol as a starting raw material is oxidized with alkaline hydrogen peroxide, then hydrolyzed in a solvent to give a water-soluble metallic salt (e.g. Na salt, Ca salt, etc.) of hexafluoro-α-hydroxyisobutanoic acid, which in an aqueous solution state is reacted with a halogen gas in the presence of a nickel salt (e.g. nickel chloride, etc.) to give hexafluoroacetone hydrate. n USE: A monomer for producing synthetic resins, synthetic rubber, etc., an intermediate for a crosslinking agent such as bisphenol AF, etc., and an intermediate raw material for drugs, agricultural chemicals, etc. n COPYRIGHT: (C)1988,JPO&Japio |