Substituted benzenes useful as intermediates
US5087724A · kind A · utility
2Cited by
12References
34Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 7, 1990 |
| Grant date | Feb 11, 1992 |
| Priority date | — |
| Expiry date | May 7, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D231/22
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for producing a 4-benzoyl-5-hydroxylpyrazole of the formula III: ##STR1## which comprises reacting carbon monoxide and a 5-hydroxypyrazole of the formula II: ##STR2## with a substituted benzene of the formula I: ##STR3## in the presence of a base and a catalyst of Group VIII of the Periodic Table.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.