Invention Grant
- Patent Title: Method for preparing difluoroacetic acid
- Patent Title (中): 二氟乙酸的制备方法
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Application No.: US13381607Application Date: 2010-06-28
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Publication No.: US09120740B2Publication Date: 2015-09-01
- Inventor: Olivier Buisine , Alessandro Chiovato
- Applicant: Olivier Buisine , Alessandro Chiovato
- Applicant Address: FR Paris
- Assignee: RHODIA OPERATIONS
- Current Assignee: RHODIA OPERATIONS
- Current Assignee Address: FR Paris
- Priority: FR0903184 20090630
- International Application: PCT/EP2010/059142 WO 20100628
- International Announcement: WO2011/000804 WO 20110106
- Main IPC: C07C51/347
- IPC: C07C51/347 ; C07C67/10 ; C07C51/09

Abstract:
A method for preparing difluoroacetic acid is described. The method can include: reacting a difluoroacetic acid ester with an aliphatic carboxylic acid which, after transesterification, results in the formation of difluoroacetic acid and the corresponding carboxylic acid ester, the carboxylic acid being selected such that the ester of the carboxylic acid has a lower boiling point than that of difluoroacetic acid; and removing the ester of the carboxylic acid by distillation as the ester forms, thus enabling the difluoroacetic acid to be recovered.
Public/Granted literature
- US20120123159A1 METHOD FOR PREPARING DIFLUOROACETIC ACID Public/Granted day:2012-05-17
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