Herbicide intermediate o-nitrophenyl cyclopropyl ketone and a method for the preparation thereof
US5453545A · kind A · utility
4Cited by
4References
1Claims
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Key dates
| Filing date | Aug 9, 1994 |
| Grant date | Sep 26, 1995 |
| Priority date | — |
| Expiry date | Aug 9, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2601/02
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
There is provided o-nitrophenyl cyclopropyl ketone, a key intermediate in the manufacture of the crop-selective, herbicidal agent 1-{[o-(cyclopropylcarbonyl)phenyl]sulfamoyl}-3-(4,6-dimethoxy-2-pyrimidiny l)urea and a method for the preparation of said ketone from dihydro-3-acetyl-2(3H)-furanone and o-nitrobenzoyl halide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.