Fluorinated phenylacetic acid derivatives in a weed control method

Patent metadata

Field	Value
Publication number	US-2024174591-A1
Application number	US-202017776457-A
Country	US
Kind code	A1
Filing date	Nov 12, 2020
Priority date	Nov 14, 2019
Publication date	May 30, 2024
Grant date	—

Abstract

The present invention relates to the use of a compound of Formula (I), wherein R 1 , R 2 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

1 . Use 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, as a herbicide.

2 . Use according to claim 1 , wherein in the compound of Formula (I) R 1 is halogen.

3 . Use according claim 2 , wherein R 1 is chlorine.

4 . Use according to claim 2 , wherein n is 2 or 3.

5 . Use according to claim 4 , wherein n is 2 and R 1 is 2,3 dichloro.

6 . Use according to claim 1 , wherein R 2 is hydrogen.

7 . Use according to any one of claims 1 to 5 claim 1 , wherein R 2 is methyl or ethyl.

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

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

9 . An agrochemically acceptable salt according to claim 8 , wherein R 1a and R 1b are both chloro.

10 . An agrochemically acceptable salt according to claim 8 , wherein said salt is selected from the group consisting of sodium, potassium, aluminum, dimethylamine, diglycolamine and choline salt.

11 . A herbicidal composition comprising a compound of Formula (I) as defined in claim 1 .

12 . A herbicidal composition according to claim 11 , further comprising at least one additional pesticide.

13 . A herbicidal composition according to claim 12 , wherein the additional pesticide is a herbicide or herbicide safener.

14 . A method of controlling weeds at a locus comprising application to the locus of a weed controlling amount of a compound of Formula (I) as defined in claim 1 .

15 . Use according to claim 3 , wherein n is 2 or 3.

16 . An agrochemically acceptable salt according to claim 9 , wherein said salt is selected from the group consisting of sodium, potassium, aluminum, dimethylamine, diglycolamine and choline salt.

17 . A herbicidal composition comprising a compound of Formula (I) as defined in an agriculturally acceptable formulation adjuvant.

18 . A method of controlling weeds at a locus comprising application to the locus of a weed controlling amount of a compound of an agrochemically acceptable salt according to claim 8 .

19 . A method of controlling weeds at a locus comprising application to the locus of a weed controlling amount of a compound of a herbicidal composition according to claim 11 .

Assignees

• Syngenta Crop Protection Ag

Inventors

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

Classifications

• C07C57/58 Primary

  containing six-membered aromatic rings · CPC title

• A01N37/10 Primary

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

• A01P13/00

  Herbicides; Algicides · CPC title