Fluorinated phenylacetic acid derivatives in a weed control method

Patent metadata

Field	Value
Publication number	US-12319648-B2
Application number	US-202017776457-A
Country	US
Kind code	B2
Filing date	Nov 12, 2020
Priority date	Nov 14, 2019
Publication date	Jun 3, 2025
Grant date	Jun 3, 2025

Abstract

The present invention relates to the use of a compound of Formula (I), wherein R1, R2 and n are as defined herein as a herbicide. The invention further relates to agrochemically acceptable salts, to herbicidal compositions which comprise a compound of Formula (I) and to the use of compounds of Formula (I) for controlling weeds, in particular in crops of useful plants.

First claim

The invention claimed is:

1. An agrochemically acceptable salt of a compound of Formula (Ia),

wherein
R 1a and R 1b are independently selected from the group consisting of halogen, methyl and C 1 -haloalkyl.

2. The agrochemically acceptable salt according to claim 1 , wherein R 1a and R 1b are both chloro.

3. The agrochemically acceptable salt according to claim 1 , wherein said salt is selected from the group consisting of sodium, potassium, aluminum, dimethylamine, diglycolamine and choline salt.

4. The agrochemically acceptable salt according to claim 2 , wherein said salt is selected from the group consisting of sodium, potassium, aluminum, dimethylamine, diglycolamine and choline salt.

5. A method of controlling weeds at a locus comprising applying to the locus of a weed a controlling amount of the agrochemically acceptable salt according to claim 1 .

6. A method of controlling weeds at a locus comprising applying to the locus of a weed a controlling amount of the agrochemically acceptable salt according to claim 4 .

7. An herbicidal composition comprising:
a compound of Formula (I),

wherein
R 1 is selected from the group consisting of halogen, methyl and C 1 -haloalkyl;
R 2 is hydrogen or C 1 -C 6 alkyl; and
n=0, 1, 2, 3, 4 or 5;
or an agronomically acceptable salt of said compound; and

at least one additional pesticide.

8. The herbicidal composition according to claim 7 , wherein the additional pesticide is an herbicide or herbicide safener.

9. A method of controlling weeds at a locus comprising applying to the locus of a weed a controlling amount of a compound of Formula (I)

wherein
R 1 is selected from the group consisting of halogen, methyl and C 1 -haloalkyl;
R 2 is hydrogen or C 1 -C 6 alkyl; and
n=0, 1, 2, 3, 4 or 5;

or an agronomically acceptable salt of said compound.

10. The method according to claim 9 , wherein in the compound of Formula (I) R 1 is halogen.

11. The method according to claim 10 , wherein R 1 is chlorine.

12. The method according to claim 11 , wherein n is 2 or 3.

13. The method according to claim 10 , wherein n is 2 or 3.

14. The method according to claim 13 , wherein n is 2 and R 1 is 2,3 dichloro.

15. The method according to claim 9 , wherein R 2 is hydrogen.

16. The method according to claim 9 , wherein R 2 is methyl or ethyl.

17. A compound according to Formula (I)

wherein
R 1 is selected from the group consisting of halogen, methyl and C 1 -haloalkyl;
R 2 is hydrogen or C 1 -C 6 alkyl; and
n=0, 1, 2, 3, 4 or 5;

or an agronomically acceptable salt of said compound; and
wherein n is 2 and R 1 is 2,3 dichloro or R 2 is hydrogen.

18. The compound according to claim 17 , wherein n is 2 and R 1 is 2,3 dichloro.

19. The compound according to claim 17 , wherein R 2 is hydrogen.

Assignees

• Syngenta Crop Protection Ag

Inventors

• Aspinall Ian Henry
• Emmett Edward John
• Hennessy Alan Joseph
• Dale Suzanna Jane
• Scutt James Nicholas

Classifications

• A01N37/10 Primary

  Aromatic or araliphatic carboxylic acids, or thio analogues thereof; Derivatives thereof · CPC title

• A01P13/00

  Herbicides; Algicides · CPC title

• C07C57/58 Primary

  containing six-membered aromatic rings · CPC title