3-HALO-(ARLY)-4-IMINOTETRAHYDROPICOLINATES AND THEIR USE AS HERBICIDES

• US 20100311594A1
• Filed: 06/07/2010
• Published: 12/09/2010
• Est. Priority Date: 06/08/2009
• Status: Active Grant

• Current Assignee: Corteva Agriscience LLC (Corteva, Inc.)
• Original Assignee: Dow Agrosciences LLC (Corteva, Inc.)
• Inventors: Schmitzer, Paul R., Lowe, Christian T., Renga, James M., Niyaz, Noormohamed M., Whiteker, Gregory T., Arndt, Kim E.
• Granted Patent: US 8,598,086 B2
• Time in Patent Office: Days
• US Class Current: 504/260
• CPC Class Codes: C07D 211/84 with hetero atoms or with carbon atoms having three bonds to hetero atoms, with at the most one bond to halogen directly attached to ring carbon atoms

Abstract

3-Halo-6-(aryl)-4-iminotetrahydropicolinic acids having mono-, di- tri- and tetra-substituted aryl substituents in the 6-position, and their acid derivatives, are herbicides demonstrating a broad spectrum of weed control.

Claims

1. A compound of the Formula I

3. An herbicidal composition comprising an herbicidally effective amount of a compound of Formula I, as claimed in claim 1, in admixture with an agriculturally acceptable adjuvant or carrier.

4. A method of controlling undesirable vegetation which comprises contacting the vegetation or the locus thereof with or applying to the soil to prevent the emergence of vegetation an herbicidally effective amount of a compound of Formula I, as claimed in claim 1.

6. The process of claim 4 in which the 4-oxo-tetrahydropicolinate of the formula

2. A compound of Formula I in which W represents H or F, X represents H, F or C₁-C₄ alkoxy, Y represents Cl and Z represents H.

5. A process for the preparation of 3-halo-6-(aryl)-4-iminotetrahydropicolinic acid esters of the Formula I