Bis-halogen carbonyl anilines and process for the production
US3983172A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 1, 1974 |
| Grant date | Sep 28, 1976 |
| Priority date | — |
| Expiry date | Mar 1, 1994 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C271/02
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Bis-halogen carbonyl anilines useful in the production of herbicides having the formula ##SPC1## Wherein PA1 X is fluorine or chlorine, PA1 Y is fluorine, chlorine, fluorocarbonyl, or chlorocarbonyl, PA1 Z is halogen, nitro, cyano, lower alkyl sulfonyl or carbalkoxy, PA1 R is lower alkyl, alkoxy, thioalkyl, phenyl, naphthyl, lower perhalogen alkyl, perhalogen alkoxy or perhalogen alkylthio, PA1 a and b represent a number from 0 to 5, with the proviso that a plus b is at the most 5, Are prepared by reacting an aryl carbamic acid fluoride having the formula ##SPC2## Wherein PA1 Z, r, a, b are as defined above with an acylating agent having the formula ##EQU1## wherein X and Y are as defined above in the presence of a tertiary amine at a temperature in the range of from -20.degree. to +40.degree.C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.