Title:
ジフルオロ酢酸およびこの塩の調製方法
Document Type and Number:
Japanese Patent JP2011515354
Kind Code:
A
Abstract:
The invention relates to a method for preparing difluoroacetic acid and the salts thereof. The invention also relates to the preparation of difluoroacetyl fluoride used as an intermediate product in the preparation of difluoroacetic acid. The method for preparing difluoroacetic acid according to the invention is characterized in that the same comprises the step of preparing difluoroacetyl fluoride by reacting dichloroacetyl chloride with hydrofluoric acid in a gaseous phase and in the presence of a chromium-based catalyst, followed by the step of hydrolysing the difluoroacetyl fluoride thus obtained.
More Like This:
Inventors:
Metsu, Francois
Saint-Jialum, Laurent
Saint-Jialum, Laurent
Application Number:
JP2011500150A
Publication Date:
May 19, 2011
Filing Date:
March 09, 2009
Export Citation:
Assignee:
Rodia Opera
International Classes:
C07C51/04; C07C51/58; C07C53/18; C07C53/48; C07B61/00
Domestic Patent References:
| JPH08109151A | 1996-04-30 | |||
| JPH11263744A | 1999-09-28 | |||
| JPH0892162A | 1996-04-09 | |||
| JPH06228043A | 1994-08-16 | |||
| JPH0161443A | ||||
| JPH07242587A | 1995-09-19 | |||
| JPH0853388A | 1996-02-27 | |||
| JPH07196577A | 1995-08-01 | |||
| JPH0372946A | 1991-03-28 | |||
| JP2006111611A | 2006-04-27 | |||
| JP2005336164A | 2005-12-08 | |||
| JPH08109151A | 1996-04-30 | |||
| JPH11263744A | 1999-09-28 | |||
| JPH0892162A | 1996-04-09 | |||
| JPH06228043A | 1994-08-16 | |||
| JPH0161443A | ||||
| JPH07242587A | 1995-09-19 | |||
| JPH0853388A | 1996-02-27 | |||
| JPH07196577A | 1995-08-01 | |||
| JPH0372946A | 1991-03-28 | |||
| JP2006111611A | 2006-04-27 | |||
| JP2005336164A | 2005-12-08 |
Foreign References:
| WO1996029298A1 | 1996-09-26 | |||
| WO1996029298A1 | 1996-09-26 |
Attorney, Agent or Firm:
Kawaguchi International Patent Office