Title:
PREPARATION METHOD FOR ASYMMETRIC DIARYL SUBSTITUTED P-PHENYLENEDIAMINE COMPOUND
Document Type and Number:
WIPO Patent Application WO/2022/048565
Kind Code:
A1
Abstract:
The present invention provides a preparation method for an asymmetric diaryl substituted p-phenylenediamine compound. The compound has the structure as shown in the following formula A. The method comprises: (1) reacting p-dihydroxybenzene with a compound of formula B in the presence of a supported FeCl3 catalyst, to obtain a compound of formula C; and (2) reacting the compound of formula C with a compound of formula D in the presence of an anhydrous FeCl3 catalyst, to obtain a compound of formula A. In formulas A-D, the groups are defined as described in the text. The method can efficiently and conveniently prepare the asymmetric diaryl substituted p-phenylenediamine compound.
Inventors:
XING JINGUO (CN)
GUO XIANGYUN (CN)
QI QI (CN)
LIU YANXIANG (CN)
TANG ZHIMIN (CN)
GUO XIANGYUN (CN)
QI QI (CN)
LIU YANXIANG (CN)
TANG ZHIMIN (CN)
Application Number:
PCT/CN2021/115983
Publication Date:
March 10, 2022
Filing Date:
September 01, 2021
Export Citation:
Assignee:
SENNICS CO LTD (CN)
International Classes:
C07C211/55; C08K3/04
Domestic Patent References:
| WO2020248572A1 | 2020-12-17 |
Foreign References:
| US4326080A | 1982-04-20 | |||
| CN105727957B | 2019-04-30 | |||
| CN111153871A | 2020-05-15 | |||
| CN1611486A | 2005-05-04 | |||
| CN101703936A | 2010-05-12 | |||
| CN106000404B | 2019-06-21 | |||
| CN110734380A | 2020-01-31 | |||
| US5750786A | 1998-05-12 | |||
| CN106608827A | 2017-05-03 |
Attorney, Agent or Firm:
SHANGHAI PATENT & TRADEMARK LAW OFFICE, LLC (CN)
Download PDF:
Previous Patent: REFRIGERATION APPLIANCE HAVING MOVABLE CAMERA
Next Patent: CALIBRATION DEVICE AND CALIBRATION METHOD
Next Patent: CALIBRATION DEVICE AND CALIBRATION METHOD