Title:
METHOD FOR PURIFYING CARBOXYLIC ACID FLUORIDE
Document Type and Number:
WIPO Patent Application WO/2021/149788
Kind Code:
A1
Abstract:
Provided is a method for stably providing a high purity R-COF product, the method configured so that a reduction in R-COF yield caused by contamination by impurities is prevented. According to the present invention, provided are: a method for purifying a carboxylic acid fluoride, the method including a step for bringing a hydrogen halide-containing carboxylic acid fluoride into contact with a metal fluoride so as to remove the hydrogen halide; a method for producing a high purity carboxylic acid fluoride, the method including a step for bringing a hydrogen halide-containing carboxylic acid fluoride into contact with a metal fluoride; a high-purity carboxylic acid fluoride obtained using this method; and a method for using a metal fluoride as a hydrogen halide adsorbent in a method for removing a hydrogen halide from a hydrogen halide-containing carboxylic acid fluoride.
Inventors:
KIMURA RYO (JP)
NAKANISHI AKIKO (JP)
MAEHARA SHOHEI (JP)
NAKANISHI AKIKO (JP)
MAEHARA SHOHEI (JP)
Application Number:
PCT/JP2021/002158
Publication Date:
July 29, 2021
Filing Date:
January 22, 2021
Export Citation:
Assignee:
KANTO DENKA KOGYO KK (JP)
International Classes:
C07C51/58; C07B61/00; C07C51/64
Foreign References:
| JPS6110530A | 1986-01-18 | |||
| JP2003054912A | 2003-02-26 | |||
| JPS59177384A | 1984-10-08 | |||
| JPS57164991A | 1982-10-09 | |||
| JP2011515354A | 2011-05-19 |
Attorney, Agent or Firm:
YAMAMOTO, Osamu et al. (JP)
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