# US 5,328,896 A · Preparing herbicidal sulphonylurea salts

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- Number: US 5,328,896 A
- Document ID: US5328896A
- Status: Granted
- Kind: A
- Application number: 08/046,106
- Filed: 1993-04-09
- Granted: 1994-07-12
- Earliest claimed: 1989-12-19
- Assignees: Bayer Aktiengesellschaft
- Inventors: Hans-Jochem Riebel; Christa Fest; Rolf Kirsten; Joachim Kluth; Klaus-Helmut Muller; Dieter Feucht; Klaus Lurssen; Hans-Joachim Santel; Robert R. Schmidt
- Web page: https://patentgrep.com/patent/US5328896A

## CPC

- C07D 521/00: Heterocyclic compounds containing unspecified hetero rings
- A01N 47/36: containing the group >N—CO—N< directly attached to at least one heterocyclic ring; Thio analogues thereof
- 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

A herbicidal sulphonylurea salt of the formula ##STR1## in which M.sup..sym. represents an alkali metal ion or the counterion, formed by protonation, of a basic organic nitrogen compound, R represents halogenoalkyl, R.sup.1 represents optionally substituted radicals from the series comprising alkyl, alkenyl, alkinyl or aralkyl, R.sup.2 represents hydrogen, halogen, alkyl, halogenoalkyl, alkoxy, halogenoalkoxy, alkylthio, halogenoalkylthio, amino, alkylamino or dialkylamino, X represents nitrogen or a --CH group, Y represents nitrogen or a --CR.sup.3 group where R.sup.3 represents hydrogen, halogen, cyano, alkyl, formyl, alkyl-carbonyl or alkoxy-carbonyl, and Z represents nitrogen or a --CR.sup.4 group where R.sup.4 represents hydrogen, halogen, alkyl, halogenoalkyl, alkoxy, halogenoalkoxy, alkylthio, alkylamino or dialkylamino.

## Claims

### Claim 1

A sulphonylurea salt of the formula ##STR14## in which R is CF.sub.3 or CHF.sub.2, and
M.sup..sym. is Na.sup..sym. or K.sup..sym..

### Claim 2 (depends on 1)

A sulphonylurea salt according to claim 1, in which R is CF.sub.3.

### Claim 3 (depends on 1)

A sulphonylurea salt according to claim 1, in which R is CHF.sub.2.

### Claim 4 (depends on 2)

A sulphonylurea salt according to claim 2, in which M.sup..sym. is Na.sup..sym..

### Claim 5 (depends on 3)

A sulphonylurea salt according to claim 3, in which M.sup..sym. is Na.sup..sym..

### Claim 6 (depends on 1)

A herbicidal composition comprising a herbicidally effective amount of a salt according to claim 1 and a diluent.

### Claim 7 (depends on 1)

A method of combating undesired vegetation which comprises applying to such vegetation or to a locus from which it is desired to exclude such vegetation a herbicidally effective amount of a salt according to claim 1.