# US 4,398,938 A · N-Acylated lactams and their herbicidal compositions and method of use

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- Number: US 4,398,938 A
- Document ID: US4398938A
- Status: Granted
- Kind: A
- Application number: 06/379,839
- Filed: 1982-05-20
- Granted: 1983-08-16
- Earliest claimed: 1982-05-20
- Assignees: Velsicol Chemical Corporation
- Inventors: Leonard J. Stach; Frank Wu
- Web page: https://patentgrep.com/patent/US4398938A

## CPC

- C07D 207/27: with substituted hydrocarbon radicals directly attached to the ring nitrogen atom
- A01N 43/36: five-membered rings
- A01N 43/40: six-membered rings
- A01N 43/46: rings with more than six members
- C07D 211/76: attached in position 2 or 6
- C07D 223/10: attached in position 2
- C07D: HETEROCYCLIC COMPOUNDS (macromolecular compounds C08)
- A01N: PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF (preservation of food or foodstuff A23); BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES (preparations for medical, dental or toiletry purposes which kill or prevent the growth or proliferation of unwanted organisms A61K); PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS

## Abstract

This invention relates to compounds of the formula: ##STR1## wherein X is halogen or trifluoromethyl; hydrogen, halogen or cyano; Z is halogen, cyano or nitro; R is alkyl; m is an integer from 0 to 6; and n is an integer from 3 to 5.

## Claims

### Claim 1

A compound of the formula: ##STR5## wherein X is halogen or trifluoromethyl; Y is hydrogen, halogen or cyano; Z is halogen, cyano or nitro; R is C.sub.1 -C.sub.6 alkyl; m is an integer from 0 to 6 and n is an integer from 3 to 5.

### Claim 2 (depends on 1)

A compound of claim 1 wherein Z is nitro.

### Claim 3 (depends on 2)

A compound of claim 2 wherein X is trifluoromethyl.

### Claim 4 (depends on 2)

A compound of claim 2 wherein m is 0.

### Claim 5 (depends on 4)

A compound of claim 4 wherein n is 3.

### Claim 6 (depends on 4)

A compound of claim 4 wherein n is 4.

### Claim 7 (depends on 4)

A compound of claim 4 wherein n is 5.

### Claim 8 (depends on 1)

A compound of claim 1, 1-[3-(2-Chloro-4-Trifluoromethylphenoxy)-6-Nitrobenzoyl] Hexamethyleneimin-2-one.

### Claim 9 (depends on 1)

The compound of claim 1, 1-[3-(2-Chloro-4-Trifluoromethylphenoxy)-6-Nitrobenzoyl] Pyrrolidin-2-one.

### Claim 10 (depends on 1)

The compound of claim 1, 1-[3-(2-Chloro-4-Trifluoromethylphenoxy)-6-Nitrobenzoyl] Piperidin-2-one.

### Claim 11 (depends on 1)

A herbicidal composition comprising an inert carrier and, as an essential active ingredient in a quantity toxic to weeds, a compound of claim 1.

### Claim 12 (depends on 1)

A method of controlling weeds which comprises contacting said weeds with a herbicidal composition comprising an inert carrier and, as an essential active ingredient in a quantity toxic to weeds, a compound of claim 1.