Method for producing fluorine-containing carboxylic acid ester

Details Method for producing fluorine-containing carboxylic acid ester Method for producing fluorine-containing carboxylic acid ester

2008-06-18

2011-10-18

Zucker, Paul A (Department: 1621)

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

Organic compounds

Carboxylic acid esters

Reexamination Certificate

active

08039665

ABSTRACT:
A method for producing a fluorine-containing carboxylic acid ester represented by the general formula R1HCFCOOR2involves reacting a fluorine-containing ether represented by the general formula R1HCFCF2OR2with water in the presence of a solid catalyst. The solid catalyst is at least one selected from the group consisting of alumina, titania, zirconia, sulfated zirconia, an activated carbon on which sulfuric acid is supported, a resin having acid sites, and aluminum phosphate. In the general formulas R1HCFCOOR2and R1HCFCF2OR2, R1represents a fluorine atom or a C1-4perfluoroalkyl group, and R2represents a monovalent organic group.

REFERENCES:
patent: 2442996 (1948-06-01), Coffman
patent: 5710317 (1998-01-01), Oharu et al.
patent: 57-86339 (1982-05-01), None
patent: 8-92162 (1996-04-01), None
patent: 2007-70345 (2007-03-01), None
White et al, Basic Energy Sciences Advisory Committee Subpanel Workshop Report, Opportunities for Catalysis in the 21st Century, 2002, pp. 1-47.
Supplementary European Search Report dated May 19, 2010 (six (6) pages).
John A. Young et al., “A New Method of Preparation of Esters of Difluoroacetic Acid”, J. Am. Chem. Soc., vol. 72, pp. 1860-1861, Apr. 1950.
V. Tolman, “Preparation of Difluoroacetic Acid and Its Derivatives from Chlorotrlfluoroethylene”, Collection Czechoslov. Chem. Commun., vol. 42, pp. 2537-2539, 1977.
Nobuo Ishikawa et al., “Facile Synthesis of Dialkyl Fluoromalonates and Their Derivatives”, Chemistry Letters, The Chemical Society of Japan, pp. 107-110, 1981.
International Search Report dated Aug. 12, 2008 w/partial English translation (three (3) pages).

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