Title:
METHOD FOR PRODUCING DIMETHYL 2,3,5,6-TETRACHLORO-1,4-BENZENEDICARBOXYLATE
Document Type and Number:
WIPO Patent Application WO/2022/085211
Kind Code:
A1
Abstract:
The present invention provides a method for producing a compound represented by formula (I), the method comprising: (a) a step for obtaining the compound represented by formula (I) as crystals by reacting, in a hydrated ketone solvent and in the presence of an alkali carboxylate, a compound represented by formula (II) with dimethyl sulfate; and (b) a step for washing the crystals with warm water at 30 to 100℃ and then further washing the crystals with an organic solvent at 30 to 80℃.
Inventors:
TABUCHI TOSHIHIKO (JP)
SAKAI MASAAKI (JP)
ISHII TERUHIKO (JP)
SAKAI MASAAKI (JP)
ISHII TERUHIKO (JP)
Application Number:
PCT/JP2021/002403
Publication Date:
April 28, 2022
Filing Date:
January 25, 2021
Export Citation:
Assignee:
SDS BIOTECH CORP (JP)
International Classes:
C07C67/11; C07C51/08; C07C63/72; C07C67/56; C07C69/76
Foreign References:
| US3689526A | 1972-09-05 | |||
| US3689527A | 1972-09-05 | |||
| CN106986767A | 2017-07-28 |
Attorney, Agent or Firm:
YAMAMOTO, Osamu et al. (JP)
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