Synthesis of fluorinated dimethyl ethers

Details Synthesis of fluorinated dimethyl ethers Synthesis of fluorinated dimethyl ethers

1992-03-25

1993-03-23

Lone, Werren B.

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

568681, 568683, C07C 4312, C07C 4122

Patent

active

051966000

ABSTRACT:
A novel process is disclosed for the synthesis of fluorinated dimethyl ethers of the formula CF.sub.2 HOCCl.sub.x F.sub.y H.sub.3-(x+y) wherein x is 0, 1 or 2; y is 1, 2 or 3; and wherein the total x+y is 1, 2 or 3. The process involves chlorination of methyl difluoromethyl ether to form a chlorinated reaction product, including at least one compound of the formula CF.sub.2 HOCH.sub.3-z Cl.sub.z, wherein z is 1, 2 or 3, which compound is then fluorinated with HF and/or an antimony salt and with or without separation from the chlorinated reaction product, to give a fluorinated reaction product including the aforementioned fluorinated dimethyl ethers.

REFERENCES:
patent: 3461213 (1969-08-01), Terrell
patent: 3896178 (1975-07-01), Terrell
Parks et al, "J. Amer. Chem. Soc." vol. 76 (1954) pp. 1387-1388.
Parks et al "J. Amer. Chem. Soc." vol. 74 (1952) pp. 2292-2293.

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