Preparation of 1,1,1,3,3,3-hexafluoropropane-2-ol by hydrogenoly

Details Preparation of 1,1,1,3,3,3-hexafluoropropane-2-ol by hydrogenoly Preparation of 1,1,1,3,3,3-hexafluoropropane-2-ol by hydrogenoly

1984-09-27

1986-01-14

Mars, Howard T.

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

Organic compounds

Oxygen containing

C07C 3138

Patent

active

045647160

ABSTRACT:
1,1,1,3,3,3-hexafluoropropane-2-ol is prepared easily and efficiently by gas-liquid reaction between hydrogen gas and a hexafluoroacetone hydrate such as trihydrate, which is liquid at room temperature, using a suitable catalyst such as active carbon-palladium catalyst. Preferably the gauge pressure of hydrogen gas is 2-10 kg/cm.sup.2, and the hydrogenolysis reaction temperature is 70.degree.-100.degree. C. The life of the catalyst can be prolonged by the addition of a small quantity of sodium hydroxide. The addition of a small quantity of aluminum hydroxide is effective in suppressing the formation of fluorine ions in the reaction liquid.

REFERENCES:
patent: 2824897 (1958-02-01), Wujciak
patent: 3418337 (1968-12-01), Middleton
patent: 3607952 (1971-09-01), Lee
patent: 4467124 (1984-08-01), Kawai et al.

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