Invention Grant
- Patent Title: Method for preparing 1,1′-ethylene-2,2′-bipyridinium dichloride
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Application No.: US16650115Application Date: 2017-10-13
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Publication No.: US10858337B2Publication Date: 2020-12-08
- Inventor: Ruikuan Yue , Yi Xue , Honglong Chen , Wenkui Wang , Chaoran Luo , Xinchun Chen , Dianhai Zhou , Jianhua Jiang , Fujun Wang
- Applicant: NANJING REDSUN BIOCHEMISTRY CO., LTD.
- Applicant Address: CN Nanjing
- Assignee: NANJING REDSUN BIOCHEMISTRY CO., LTD.
- Current Assignee: NANJING REDSUN BIOCHEMISTRY CO., LTD.
- Current Assignee Address: CN Nanjing
- Agency: Oliff PLC
- Priority: CN201710760340 20170830
- International Application: PCT/CN2017/106013 WO 20171013
- International Announcement: WO2019/041462 WO 20190307
- Main IPC: C07D401/04
- IPC: C07D401/04
Abstract:
A method for preparing 1,1′-ethylene-2,2′-bipyridinium dichloride includes mixing an aqueous diquat dibromide solution with hydrochloric acid, adding dropwise to a mixture of an organic solvent, a bromine absorbent, and an oxidant, and reacting to produce 1,1′-ethylene-2,2′-bipyridinium dichloride.
Public/Granted literature
- US20200308138A1 METHOD FOR PREPARING 1,1'-ETHYLENE-2,2'-BIPYRIDINIUM DICHLORIDE Public/Granted day:2020-10-01
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