Process for making 1,1-dichloro-1,2-difluoroethane

Details Process for making 1,1-dichloro-1,2-difluoroethane Process for making 1,1-dichloro-1,2-difluoroethane

1990-09-19

1993-05-04

Stoll, Robert L.

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

Organic compounds

Halogen containing

570134, 570166, C07C 1700

Patent

active

H00011886

ABSTRACT:
A process for the preparation of 1,1-dichloro-1,2-difluoroethane (HCFC-132c) comprising contacting 1,1-dichloroethylene with lead dioxide and anhydrous hydrogen fluoride. Addition of fluorine to the double bond of vinylidene chloride can be achieved using inexpensive and readily available commercial raw materials.

REFERENCES:
patent: 2466189 (1949-04-01), Waalkes
Albert L. Henne & T. Phillip Waalkes, "The Addition of Fluorine to Double Bonds", Oct. 1945, pp. 1639-1640; J. Amer. Chem. Soc. 67.
Rausch et al., "The Addition of Fluorine to Halogenated Olefins by Means of Metal Fluorides", J. Org. Chem. 28, pp. 494-497, Jul. 1962.
Bissell et al., "The Addition of Fluorine to Halogenated Olefins", J. Org. Chem. 29, pp. 1591-1593, Nov. 1963.

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