Title:
PREPARATION METHOD FOR DIARYL-P-PHENYLENEDIAMINE COMPOUND
Document Type and Number:
WIPO Patent Application WO/2024/040766
Kind Code:
A1
Abstract:
The present invention provides a preparation method for a diaryl-p-phenylenediamine compound represented by formula (I). The preparation method comprises: performing a condensation dehydrogenation reaction with a compound of formula (II) and a compound of formula (III) in the presence of a solvent, a hydrogen acceptor, a water-carrying agent and a catalyst; in the formulas, R1, R2 and R3 are each independently selected from H, C1-C8 alkyl, C3-C8 cycloalkyl, C1-C8 alkoxy, C3-C8 cycloalkoxy and phenyl, a and c are each independently an integer from 0 to 5, and b is an integer from 0 to 4.
Inventors:
XING JINGUO (CN)
GUO XIANGYUN (CN)
TANG ZHIMIN (CN)
GUO XIANGYUN (CN)
TANG ZHIMIN (CN)
Application Number:
PCT/CN2022/133174
Publication Date:
February 29, 2024
Filing Date:
November 21, 2022
Export Citation:
Assignee:
SENNICS CO LTD (CN)
International Classes:
C07C211/55; C07C209/60; C07C211/54
Foreign References:
| CN110734380A | 2020-01-31 | |||
| CN106608827A | 2017-05-03 | |||
| CN102675129A | 2012-09-19 | |||
| CN112175248A | 2021-01-05 |
Other References:
XING JINGUO, GUO XIANGYUN, RUAN XIAOMIN: "Preparation and Properties of Diaryl-p-phenylenediamine Antioxidants", RUBBER SCIENCE AND TECHNOLOGY., no. 9, 1 September 2017 (2017-09-01), pages 24 - 29, XP093144371
Attorney, Agent or Firm:
SHANGHAI PATENT & TRADEMARK LAW OFFICE, LLC (CN)
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