Abstract
1. Conditions were found for the production of perfluorodimethylketene in good yields by the dehalogenation ofα-haloperfluoroisobutyryl halides with zinc in ethyl acetate. 2. The interaction ofα-chloroperfluoropropionyl chloride with zinc, leading to the production of a low yield of a mixture of perfluoroacrylyl and tetrafluoropropionyl fluorides, was investigated. 3. Perfluoroacrylyl halides were produced by dehalogenation of α,β-dibromoperfluoropropionyl halides. In this case there is a side reaction of cleavage of the ethers by the acid halides, leading to esters of fluorinated acids. 4. The cleavage of ethers by perfluoroacrylyl halides in the presence of zinc salts can be used as a preparative method for obtaining alkyl perfluoroacrylates.
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