Production of compounds with chf2- or chf groups
AssigneeSolvay Organics Gmbh
InventorMax Braun
Life of this patent
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Abstract
Compounds having a CHF2C(O) or CHFC(O) group can be prepared from the corresponding compounds having a CClF2C(O) or CClFC(O) group or the corresponding bromine or iodine compound and zinc in the presence of an alcohol as a proton source. Preference is given to preparing monoesters having one CHF2C(O) group or diesters having two CHFC(O) groups or (O)CCHFC(O) groups in this way.
Claims12
Process for preparing compounds having a CFnHC(O) group from a CFnXC(O) group and zinc in the presence of an alcohol as a proton source, where n is 1 or 2 and X is bromine, iodine or chlorine, by exchanging X for hydrogen, excluding compounds which are substituted by X both in the α-position and in the β-position.
The azeotrope of methyl difluoroacetate and methanol.
Dependencies are inferred from the claim text.