- Synthesis of 6-Aryl-5-fluoropicolinate Herbicides via Halex Reaction of Tetrachloropicolinonitrile
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The development of a new synthesis of 6-aryl-5-fluoropicolinate herbicides is described. This general route employs the halogen exchange (halex) reaction of tetrachloropicolinonitrile to give a mixture of chlorofluoropicolinonitriles. It was found that th
- Whiteker, Gregory T.,Froese, Robert D. J.,Arndt, Kim E.,Renga, James M.,Zhu, Yuanming,Roth, Gary A.,Yang, Qiang,Canturk, Belgin,Klosin, Jerzy
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p. 2166 - 2174
(2019/08/26)
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- PROCESS FOR THE PREPARATION OF 4-AMINO-3-CHLORO-5-FLUORO-6-(SUBSTITUTED) PICOLINATES
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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, halogen exchange and hydrolysis, esterification and transition metal assist
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Page/Page column 7
(2012/07/31)
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- PROCESS FOR THE PREPARATION OF 4-AMINO-3-CHLORO-5-FLUORO-6-(SUBSTITUTED) PICOLINATES
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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 t
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Page/Page column 7
(2012/07/31)
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- Preparation of 2-cyano-6-chloropyridine compounds
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Novel methods for preparing 2-cyano-6-chloropyridines are disclosed. The compounds are useful as intermediates in preparing other intermediates or as intermediates directly used in making pesticides, especially herbicides.
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