Process for the preparation of 4-amino-5-fluoro-3-halo-6-(substituted)picolinates
First Claim
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1. A process for the preparation of a 4-amino-5-fluoro-3-halo-6-(substituted)picolinate of the Formula I
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Abstract
4-Amino-5-fluoro-3-halo-6-(substituted)picolinates are conveniently prepared from 4,5,6-trichloropicolinonitrile by a series of steps involving fluorine exchange, amination, halogen exchange, halogenation, nitrile hydrolysis, esterification, and transition metal assisted coupling.
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4 Claims
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1. A process for the preparation of a 4-amino-5-fluoro-3-halo-6-(substituted)picolinate of the Formula I
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2. A process for the preparation of a 4-amino-5-fluoro-3-halo-6-(substituted)picolinate of the Formula I
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3. A process for the preparation of a 4-amino-5-fluoro-3-halo-6-(substituted)picolinate of the Formula I
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4. A process for the preparation of a 4-amino-5-fluoro-3-halo-6-(substituted)picolinate of the Formula I
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