Herbicidally active 2,5-dihydropyrroles
US4909828A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 13, 1989 |
| Grant date | Mar 20, 1990 |
| Priority date | — |
| Expiry date | Apr 13, 2009 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01N43/82
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Herbicidal 2,5-dihydropyrroles of the formula ##STR1## wherein A represents hydroxy, halogen, an alkylcarbonyloxy group having alkyl with 1 to 4 carbon atoms optionally substituted by halogen, or an alkylsulfonyloxy group having 1 to 4 carbon atoms optionally substituted by halogen, PA0 X represents CH or N, and PA0 R.sup.1, R.sup.2 and R.sup.3 each represent hydrogen, or an alkyl group having 1 to 4 carbon atoms optionally substituted by halogen, with the proviso that all of R.sup.1, R.sup.2 and R.sup.3 do not simultaneously represent hydrogen, PA0 or R.sup.2 and R.sup.3, together with the carbon atom to which they are bonded, may form an alicyclic ring with 3 to 6 carbon atoms. Intermediates of the formula ##STR2## are also new.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.