Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing
Patent
1993-04-19
1995-01-31
Mars, Howard T.
Organic compounds -- part of the class 532-570 series
Organic compounds
Oxygen containing
570142, C07L 4101, C07L 1733
Patent
active
053860640
ABSTRACT:
A process for the production of bis(fluoromethyl)ether which comprises contacting formaldehyde with hydrogen fluoride in the presence of an essentially water-immiscible solvent for the ether. The bis(fluoromethyl)ether may be converted to difluoromethane, optionally after separation from the solvent, preferably by heating the bis(fluoromethyl)ether to elevated temperature in the presence of a metal, metal oxide, metal fluoride or metal oxyfluoride catalyst.
REFERENCES:
Viktor Weinmayer, Hydrogen Fluoride as a Condensing Agent. VI. Reactions of Fluoroolefins with Formaldehyde in Hydrogen Fluoride, Journal of Organic Chemistry, vol. 28, No. 2, Feb. 1963, pp. 492-494.
Grady Brian T.
Woodcock Duncan C.
Imperial Chemical Industries plc
Mars Howard T.
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