Method for producing 2,2,2-trifluoroethanol

Details Method for producing 2,2,2-trifluoroethanol Method for producing 2,2,2-trifluoroethanol

2007-04-24

2007-04-24

Witherspoon, Sikarl A. (Department: 1621)

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

Organic compounds

Oxygen containing

Reexamination Certificate

active

10489362

ABSTRACT:
A method for producing 2,2,2-trifluoroethanol in which a γ-hydroxybutyric acid salt is reacted with 1,1,1-trifluoro-2-chloroethane to generate 2,2,2-trifluoroethanol is provided. This method leads to increased yields of 2,2,2 -trifluoroethanol, facilitates the separation of salt byproducts and allows the recycling of an aprotic polar solvent.The present invention concerns a method for producing 2,2,2-trifluoroethanol in which a γ-hydroxybutyric acid salt is reacted with 1,1,1-trifluoro-2-chloroethane in an aprotic polar solvent to generate 2,2,2-trifluoroethanol. This method is characterized in that the γ-hydroxybutyric acid salt used contains no more than 6 wt % of 4,4′-oxybis(butyric acid).

REFERENCES:
patent: 4489211 (1984-12-01), Ogura et al.
patent: 4590310 (1986-05-01), Townsend et al.
patent: 6894197 (2005-05-01), Mimura et al.
patent: 58-134043 (1983-08-01), None
patent: 58-140031 (1983-08-01), None
patent: 61-106529 (1986-05-01), None

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