Title:
METHOD FOR PRODUCING ESTER GROUP-CONTAINING ACID DIANHYDRIDE DERIVATIVE
Document Type and Number:
WIPO Patent Application WO/2020/250920
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a production method by which an ester group-containing acid dianhydride derivative is efficiently obtained in a short time from a low-cost starting material having few environmental sanitation problems at an industrially applicable reaction temperature, while avoiding impurities that have adverse effects on a semiconductor element; and the present invention provides a method for producing an ester group-containing acid dianhydride derivative represented by general formula (4), said method being characterized by causing a lower alkanoic acid ester of an aromatic diol represented by general formula (1) and a trimellitic acid anhydride represented by formula (3) to react with each other in an organic solvent in the presence of an amine compound.
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Inventors:
TAHARA HIROYUKI (JP)
Application Number:
PCT/JP2020/022785
Publication Date:
December 17, 2020
Filing Date:
June 10, 2020
Export Citation:
Assignee:
MANAC INC (JP)
International Classes:
C07B61/00; C07D307/89
Foreign References:
| JP2000186080A | 2000-07-04 | |||
| US3784573A | 1974-01-08 | |||
| JP2006206486A | 2006-08-10 |
Attorney, Agent or Firm:
TSUKUNI & ASSOCIATES et al. (JP)
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