PROCESS FOR THE PREPARATION OF 4-AMINO-5-FLUORO-3-CHLORO-6-(SUBSTITUTED)PICOLINATES

World Intellectual Property Organization Patent

APP PUB NO WO-2014093580-A1
SERIAL NO

PCTUS2013074575

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Abstract

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4-Amino-5-fluoro-3-chloro-6-(substituted)picolinates are prepared from trifluoroacetic acid, p-methoxyaniline, a C1-C4 alkyl propiolate and a substituted methylene amine by a series of steps. In particular, provided herein are processes for the preparation of 4-amino-5-fluoro-3-chloro-6-(substituted)picolinates from a non-pyridine source without a metal assisted coupling and without fluorination with an expensive fluorinating agent. These picolinates are useful as herbicides.

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Patent Owner(s)

Patent OwnerAddress
DOW AGROSCIENCES LLCUSINDIANAPOLIS IN

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Inventor(s)

Inventor Name Address
GIAMPIETRO NATALIE C 9330 ZIONSVILLE ROAD INDIANAPOLIS INDIANA 46268 46268
RENGA JAMES M 2022 TURNBERRY COURT SANTA ROSA CA 95403

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