Production of substituted phenylurea
US4328166A · kind A · utility
3Cited by
2References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 21, 1980 |
| Grant date | May 4, 1982 |
| Priority date | — |
| Expiry date | Nov 21, 2000 |
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.