Hydrogenation of fluorinated esters

Details Hydrogenation of fluorinated esters Hydrogenation of fluorinated esters

1977-01-21

1978-02-07

Mars, Howard T.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

560197, C07C 3134, C07C 2900

Patent

active

040727262

ABSTRACT:
Fluorinated esters of the formula C.sub.n H.sub.x F.sub.2n+1-x CO.sub.2 CH.sub.2 C.sub.m H.sub.y F.sub.2m+1-y such as CF.sub.3 CO.sub.2 CH.sub.2 CF.sub.3 are hydrogenated to fluorinated alcohols such as CF.sub.3 CH.sub.2 OH using a catalyst having between 50 and 100 percent, and preferably 75-95 percent CuO by weight. In the above formula n= 1 to 13, m= 1 to 13, x= 0 to 3 and y= 0 to 3. In the most preferred esters, n= m and x= y= 0. The catalyst may also contain 0-50 percent and preferably 5-25 percent by weight of a filler or binder such as a silicate salt. The reaction produces greater yields of alcohol and longer catalyst life than with chromite catalysts, and may proceed at substantially atmospheric pressures.

REFERENCES:
patent: 2091800 (1937-08-01), Adkins et al.
patent: 3324169 (1967-06-01), Hollander et al.
patent: 3356747 (1967-12-01), Anello et al.
patent: 3390191 (1968-06-01), Anello et al.
patent: 3424785 (1969-01-01), Pittman et al.
patent: 3465050 (1969-09-01), Pittman et al.

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