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Process for the preparation of 4-amino-3-chloro-5-fluoro-6-(substituted) picolinates
US9452984B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9452984-B2 |
| Application number | US-201514734347-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 9, 2015 |
| Priority date | Jan 25, 2011 |
| Publication date | Sep 27, 2016 |
| Grant date | Sep 27, 2016 |
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- Title
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Abstract
Official abstract text for this publication.
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 assisted coupling.
First claim
Opening claim text (preview).
What is claimed is: 1. A compound of the formula: wherein W 1 represents F, Cl, Br or I. 2. A compound of the formula: wherein W 2 represents Cl, Br or I.
Assignees
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Classifications
Amides; Imides · CPC title
six-membered rings · CPC title
- C07D213/84Primary
Nitriles · CPC title
- C07D213/72Primary
Nitrogen atoms (nitro radicals C07D213/61) · CPC title
Acids; Esters · CPC title
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- What does patent US9452984B2 cover?
- 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 assisted coupling.
- Who is the assignee on this patent?
- Dow Agrosciences Llc
- What technology area does this patent fall under?
- Primary CPC classification C07D213/84. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Sep 27 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).