Process for producing 4-benzoylpyrazoles
US4383116A · kind A · utility
1Cited by
3References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 4, 1981 |
| Grant date | May 10, 1983 |
| Priority date | — |
| Expiry date | Mar 4, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D231/20
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
4-Benzoyl-5-hydroxypyrazoles useful as herbicidal active ingredients or their intermediate are produced by a condensation of a pyrazolone and a benzotrichloride followed by a hydrolysis reaction with industrial advantages.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.