Title:
METHOD FOR PREPARING CARONIC ANHYDRIDE
Document Type and Number:
WIPO Patent Application WO/2023/226332
Kind Code:
A1
Abstract:
The present disclosure relates to a method for preparing caronic anhydride, comprising subjecting caronic acid to a cyclization reaction to obtain a crude caronic anhydride product; and performing recrystallization treatment on the crude caronic anhydride product by means of isopropyl ether so as to obtain caronic anhydride.
Inventors:
LIN ZHIGANG (CN)
QUE LIMIN (CN)
SHAN GUANGSHENG (CN)
GAO PANPAN (CN)
CHEN CHENGXIANG (CN)
QUE LIMIN (CN)
SHAN GUANGSHENG (CN)
GAO PANPAN (CN)
CHEN CHENGXIANG (CN)
Application Number:
PCT/CN2022/132714
Publication Date:
November 30, 2023
Filing Date:
November 18, 2022
Export Citation:
Assignee:
ABA CHEMICALS NANTONG LTD (CN)
International Classes:
C07D307/93
Foreign References:
| CN114933580A | 2022-08-23 | |||
| CN102127040A | 2011-07-20 | |||
| CN104163759A | 2014-11-26 | |||
| CN114456058A | 2022-05-10 | |||
| CN102391228A | 2012-03-28 | |||
| CN102070575A | 2011-05-25 | |||
| JP2004189624A | 2004-07-08 |
Attorney, Agent or Firm:
JIANGSU CO-FAR LAW FIRM (CN)
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