Process for the preparation of substituted acyl ureas
US4355178A · kind A · utility
1Cited by
8References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 17, 1980 |
| Grant date | Oct 19, 1982 |
| Priority date | — |
| Expiry date | Oct 17, 2000 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01N47/34
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention relates to a process for the preparation of acyl ureas of formula (I) ##STR1## wherein R.sub.1 and R.sub.2 are the same of different and each is halogen atom, preferably fluorine or chlorine atom, and PA0 R.sub.3 is a substituted aryl group. The compounds of the invention can be prepared by reacting an urea of formula (II): EQU R.sub.3 NHCONH.sub.2 (II) wherein R.sub.3 is as defined above, with an acid chloride of formula (III): ##STR2## wherein R.sub.1 and R.sub.2 are as defined above, in an inert organic solvent at a temperature of from 20.degree. C. to 100.degree. C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.