- 专利标题: Process for the preparation of 3-(3-chloro-1h-pyrazol-1-yl)pyridine
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申请号: US15727718申请日: 2017-10-09
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公开(公告)号: US10035786B2公开(公告)日: 2018-07-31
- 发明人: Xiaoyong Li , Qiang Yang , Gary Roth , Beth Lorsbach
- 申请人: Dow AgroSciences LLC
- 申请人地址: US IN Indianapolis
- 专利权人: Dow Agrosciences LLC
- 当前专利权人: Dow Agrosciences LLC
- 当前专利权人地址: US IN Indianapolis
- 代理机构: Barnes & Thornburg LLP
- 代理商 Carl D. Corvin
- 主分类号: C07D401/04
- IPC分类号: C07D401/04
摘要:
3-(3-Chloro-1H-pyrazol-1-yl)pyridine is prepared by cyclizing 3-hydrazinopyridine.dihydrochloride with commercially available 3-ethoxyacrylonitrile to provide 3-(3-amino-1H-pyrazol-1-yl)pyridine, and by converting the amino group to a chloro group by a Sandmeyer reaction.
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