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HK1189124A - Process for the preparation of 4-amino-3-chloro-5-fluoro-6-(substituted)picolinates - Google Patents

Process for the preparation of 4-amino-3-chloro-5-fluoro-6-(substituted)picolinates Download PDF

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Publication number
HK1189124A
HK1189124A HK14102289.0A HK14102289A HK1189124A HK 1189124 A HK1189124 A HK 1189124A HK 14102289 A HK14102289 A HK 14102289A HK 1189124 A HK1189124 A HK 1189124A
Authority
HK
Hong Kong
Prior art keywords
picolinates
fluoro
chloro
amino
substituted
Prior art date
Application number
HK14102289.0A
Other languages
Chinese (zh)
Inventor
Yuanming Zhu
Gregory T. Whiteker
Kim E. Arndt
James M. Renga
Robert D. Froese
Original Assignee
Dow Agrosciences Llc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dow Agrosciences Llc filed Critical Dow Agrosciences Llc
Publication of HK1189124A publication Critical patent/HK1189124A/en

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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.
HK14102289.0A 2011-01-25 2012-01-24 Process for the preparation of 4-amino-3-chloro-5-fluoro-6-(substituted)picolinates HK1189124A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US61/435,974 2011-01-25

Publications (1)

Publication Number Publication Date
HK1189124A true HK1189124A (en) 2014-05-30

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