发明申请
US20140046070A1 PROCESS FOR THE PREPARATION OF 4-AMINO-3-CHLORO-5-FLUORO-6-(SUBSTITUTED)PICOLINATES
有权
制备4-氨基-3-氯氟-6-(取代的)吡啶甲酸酯的方法
- 专利标题: PROCESS FOR THE PREPARATION OF 4-AMINO-3-CHLORO-5-FLUORO-6-(SUBSTITUTED)PICOLINATES
- 专利标题(中): 制备4-氨基-3-氯氟-6-(取代的)吡啶甲酸酯的方法
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申请号: US14049645申请日: 2013-10-09
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公开(公告)号: US20140046070A1公开(公告)日: 2014-02-13
- 发明人: Yuanming Zhu , Gregory T. Whiteker , Kim E. Arndt , James M. Renga , Robert D.J. Froese
- 申请人: Cynthia Armdt , James M. Renga , Kim E. Arndt , Gregory T. Whiteker , Yuanming Zhu , Robert D.J. Froese
- 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
- 主分类号: C07D213/807
- IPC分类号: C07D213/807 ; C07D213/84
摘要:
4-Amino-3-chloro-5-fluoro-6-(substituted)picolinates are conveniently prepared from 3,4,5,6-tetrachloropicolinonitrile by a series of steps involving fluorine exchange, amination, reaction with hydrazine, halogenation, hydrolysis and esterification, and transition metal assisted coupling.
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