6-alkyl or alkenyl-4-aminopicolinates and their use as herbicides

• US 7,432,227 B2
• Filed: 04/02/2004
• Issued: 10/07/2008
• Est. Priority Date: 04/02/2003
• Status: Active Grant

• Current Assignee: Corteva Agriscience LLC (Corteva, Inc.)
• Original Assignee: Dow Agrosciences LLC (Corteva, Inc.)
• Inventors: Lowe, Christian Thomas, Balko, Terry William, Schmitzer, Paul Richard, Fields, Stephen Craig, Irvine, Nicholas Martin, Buysse, Ann Marie, Lo, William Chi-Leung, Richburg, John Sanders
• Primary Examiner(s): QAZI, SABIHA NAIM
• Application Number:
  US10/816,611
• Publication Number:
  US 20040198608A1
• Time in Patent Office: 1,649 Days
• Field of Search: 504/244, 504/251, 504/252, 504/254, 504/255, 504/260, 546/250, 546/268.4, 546/268.1, 546/255, 546/280.4, 546/281.7, 546/283.4, 546/312, 546/306, 546/311, 546/297, 546/296
• US Class Current: 504/260
• CPC Class Codes: A01N 43/40 six-membered rings
• CPC Class Codes: C07D 213/79 Acids; Esters

Abstract

4-Aminopicolinic acids having alkyl or alkenyl substituents in the 6-position and their amine and acid derivatives are potent herbicides demonstrating a broad spectrum of weed control.

Claims

1. A compound of the formula I

2. The compounds of claim 1 in which Y represents CH₃ or CH₂CH₃.

3. The compounds of claim 1 in which W represents NR₁R₂ where R₁ and R₂ independently represent H or C₁-C₆ alkyl.

4. A herbicidal composition comprising a herbicidally effective amount of a compound of formula I

5. 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