Production of substituted phenylurea
US4263219A · kind A · utility
2Cited by
7References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 21, 1979 |
| Grant date | Apr 21, 1981 |
| Priority date | — |
| Expiry date | Feb 21, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C273/1854
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A compound of the formula: ##STR1## which is useful as a herbicide, is effectively produced by reacting a compound of the formula: ##STR2## with dimethyl sulfate in a two phase reaction medium consisting of water and a hydrophobic organic solvent in the presence of a phase transfer catalyst, or produced through a novel intermediate of the formula: ##STR3##
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.