Herbicidal sulfonylureas
US4940792A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 4, 1987 |
| Grant date | Jul 10, 1990 |
| Priority date | — |
| Expiry date | Dec 4, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D521/00
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Novel substituted N-sulfonyl-N'-pyrimidinylureas or N-sulfonyl-N'-triazinylureas of the formula I ##STR1## have good pre- and postemergence selective herbicidal and growth regulating properties. In this formula PA1 E is nitrogen or --CH.dbd., PA1 the group ##STR2## is a phenyl, naphthyl, furyl, thiophenyl, pyrrole or pyridinyl radical which is substituted in accordance with the definitions of PA1 R.sup.1 and R.sup.2, PA1 R.sup.3 and R.sup.4 are hydrogen, lower alkyl or lower alkoxy, or one of R.sup.3 and R.sup.4 may also be halogen, lower alkenyl, lower haloalkenyl, lower haloalkoxy, amino, lower alkylamino, --CH(OCH.sub.3).sub.2, a cyclized ketal group or a saturated 5- or 7-membered heterocycle which is bound through the nitrogen atom, PA1 R.sup.5 is hydrogen, lower alkyl, lower haloalkyl, or an unsubstituted or substituted phenyl, benzyl or naphthyl radical, and PA1 R.sup.6 is an alkyl, acyl or acylamido radical which is bound through sulfur or a sulfinyl or sulfonyl group and is as defined in the description, or is a 5- to 7-membered heterocyclic amino radical which is bound through the nitrogen atom. These compounds are particularly suitable for selectively controlling weeds i…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.