Process for the separation of phenyluracil compounds
US5900483A · kind A · utility
0Cited by
2References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 24, 1998 |
| Grant date | May 4, 1999 |
| Priority date | — |
| Expiry date | Aug 24, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D239/54
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for the separation of phenyluracil compounds is provided. The process according to the present invention comprises treating with a weakly-basic substance a mixture of a halogenophenyluracil compound (I) and a cyanophenyluracil compound (II): ##STR1## wherein X is a hydrogen or fluorine atom, Y is a chlorine or bromine atom, and R is an alkyl group containing 1 to 3 carbon atoms, to separate the compounds (I) and (II).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.