Invention Grant
- Patent Title: Method of preparation of florasulam
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Application No.: US16754856Application Date: 2018-10-10
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Publication No.: US12134618B2Publication Date: 2024-11-05
- Inventor: Jossian Oppenheimer , Michael Gullo , David E. Podhorez , Justin A. Alberts
- Applicant: Dow AgroSciences LLC
- Applicant Address: US IN Indianapolis
- Assignee: Dow AgroSciences LLC
- Current Assignee: Dow AgroSciences LLC
- Current Assignee Address: US IN Indianapolis
- International Application: PCT/US2018/055115 WO 20181010
- International Announcement: WO2019/074995 WO 20190418
- Main IPC: A01N43/90
- IPC: A01N43/90 ; C07D487/04
Abstract:
The present disclosure concerns a method for preparing florasulam which involves treating a solution of 2,6-difluoroaniline in 1,2-propylene glycol with: a) sulfonyl chloride III and then b) a base to provide, after workup and isolation, florasulam (I) in yields of about 65-85%. The treatment of 2,6-difluoroaniline with sulfonyl chloride III and the base are conducted by controlled additions.
Public/Granted literature
- US20210198262A1 METHOD OF PREPARATION OF FLORASULAM Public/Granted day:2021-07-01
Information query
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