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

• US 20160159742A1
• Filed: 02/10/2016
• Published: 06/09/2016
• Est. Priority Date: 12/13/2012
• Status: Active Grant

• Current Assignee: Dow Agrosciences LLC (Corteva, Inc.)
• Original Assignee: Dow Agrosciences LLC (Corteva, Inc.)
• Inventors: Giampietro, Natalie C., Renga, James M.
• Granted Patent: US 9,518,019 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: C07C 251/12 being acyclic
• CPC Class Codes: C07D 213/79 Acids; Esters
• CPC Class Codes: C07D 213/803 Processes of preparation

Abstract

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.

Claims

1. A compound of Formula E

2. A compound of Formula C

3. A compound of Formula G