Invention Grant
- Patent Title: Process for the preparation of 4-amino-3-chloro-5-fluoro-6-(substituted)picolinates
-
Application No.: US14049645Application Date: 2013-10-09
-
Publication No.: US09598368B2Publication Date: 2017-03-21
- Inventor: Yuanming Zhu , Gregory T. Whiteker , Kim E. Arndt , James M. Renga , Robert D. J. Froese
- Applicant: Yuanming Zhu , Gregory T. Whiteker , Cynthia Arndt , James M. Renga , Robert D. J. Froese
- Applicant Address: US IN Indianapolis
- Assignee: Dow AgroSciences LLC
- Current Assignee: Dow AgroSciences LLC
- Current Assignee Address: US IN Indianapolis
- Agent Michael R. Asam
- Main IPC: C07D213/79
- IPC: C07D213/79 ; C07D213/84 ; C07D213/803 ; C07D213/807
Abstract:
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.
Public/Granted literature
- US20140046070A1 PROCESS FOR THE PREPARATION OF 4-AMINO-3-CHLORO-5-FLUORO-6-(SUBSTITUTED)PICOLINATES Public/Granted day:2014-02-13
Information query
IPC分类:
