Method for eradicating weeds with derivatives of 3-acetyl-5-sec-butyl-4-hydroxy-3-pyrrolin-2-one

Patent metadata

Field	Value
Publication number	US-9468209-B2
Application number	US-201414548289-A
Country	US
Kind code	B2
Filing date	Nov 20, 2014
Priority date	Sep 26, 2005
Publication date	Oct 18, 2016
Grant date	Oct 18, 2016

Abstract

A compound represented by formula (I), or (II), or a salt thereof, for eradicating weeds.

First claim

What is claimed is:

1. A compound represented by formula (I), or (II), or a salt thereof,

wherein
R 1 independently and at each occurrence represents H; or —C k H 2k+1 , —OC k H 2k+1 , —(C═O)C k H 2k+1 , —COOC k H 2k+1 , —C k H 2k−1 , —OC k H 2k−1 , —(C═O)C k H 2k−1 , or —COOC k H 2k−1 , each unsubstituted or substituted by one or more substituents selected from a heterocycle, an aryl, a phenylalkyl, a heterocycloalkyl phenyl, a heterocycloalkyl, a heterocycloalkoxyl, a phenoxyl; a phenoxy phenyl; a halogen, a cyano, a nitro, an alkoxyalkyl, an alkoxycarbonyl, and/or an amido; wherein k represents an integer from 1 to 8;
R 2 represents H, CH 3 — or CH 3 CH 2 —; and
R 3 represents a straight or branched chain C n H 2n+1 , or C n H 2n−1 group which is substituted by a halogen group or a cyano group wherein n is an integer from 3 to 15.

2. A compound of claim 1 , represented by formula (III), (IV) or (V), or a salt thereof,

wherein
X independently and at each occurrence represents H; or —C m H 2m+1 , or —OC m H 2m+1 , each unsubstituted or substituted by one or more substituents selected from a heterocyclic alkyl, a heterocyclic aryl, an aryl, a phenylalkyl, a heterocycloalkyl phenyl, a heterocycloalkyl, a heterocycloalkoxyl, a phenoxyl; a phenoxy phenyl; a halogen, a cyano, a nitro, an alkoxyalkyl, an alkoxycarbonyl, and/or an amido;
R 3 is a halogen, —CN, a phenyl, a halogenated alkyl, a cyano-alkyl, a phenylalkyl, a halogenoalkenyl, a cyanoalkenyl, or a phenylalkenyl; and
m represents an integer from 1 to 7.

3. A herbicide composition for killing weeds, comprising an effective amount of the compound of claim 1 and a suitable additive.

4. A method of eradicating weeds, the method comprises applying to weeds selected from the group consisting of broadleaf weeds, grassy weeds, and sedge weeds an effective amount of a compound of claim 1 , or a salt thereof.

5. A method of eradicating weeds, comprises applying to weeds selected from the group consisting of broadleaf weeds, grassy weeds, and sedge weeds an effective amount of a herbicide composition of claim 3 .

6. The method of claim 4 , wherein the compound is applied in a solution having a concentration of 10-800 μg of the compound per 1 g of the solution.

7. The method of claim 4 , wherein the compound is applied under exposure to sun light.

8. The method of claim 4 , wherein the broadleaf weeds are crofton weeds.

Assignees

• Univ Nanjing Agricultural

Inventors

• Qiang Sheng
• Chen Shiguo
• Yang Chunlong
• Dai Xinbin
• Dong Yunfa

Classifications

• C07D207/38 Primary

  2-Pyrrolones · CPC title

• A01N43/36 Primary

  five-membered rings · CPC title