Preparation of 1,1,1,3,3,3-hexafluoropropane-2-ol by vapor phase

Details Preparation of 1,1,1,3,3,3-hexafluoropropane-2-ol by vapor phase Preparation of 1,1,1,3,3,3-hexafluoropropane-2-ol by vapor phase

1983-05-16

1984-08-21

Mars, Howard T.

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

Organic compounds

Oxygen containing

C07C 3138

Patent

active

044671245

ABSTRACT:
1,1,1,3,3,3-hexafluoropropane-2-ol is obtained with high yield and high selectivity by vapor phase hydrogenolysis of a hydrate of hexafluoroacetone by using either a nickel catalyst or a palladium catalyst, or both. Hydrates of hexafluoroacetone are convenient to handling and storage because of being liquid or solid at room temperature and, moreover, can be refined to extremely high purity so that the catalyst exhibits long service life without suffering from poisoning. The hydrogenolysis reaction takes place at relatively low temperatures such as 40.degree.-200.degree. C. at atmospheric pressure.

REFERENCES:
patent: 2824897 (1958-02-01), Wujciak et al.
patent: 3418337 (1968-12-01), Middleton, Jr.
patent: 3468964 (1969-09-01), Swamer
patent: 3702872 (1972-11-01), Regan
patent: 3714271 (1973-01-01), Regan
Gambaryan et al., Angewandte Chemie, Int. Ed. 5 (11), p. 947, (1966).

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