Process for preparing 5-aroyl-1,2-dihydro-3H-pyrrolo[1,2-A]pyrrole-1,1-dicarboxylates
US4873340A · kind A · utility
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25Claims
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Key dates
| Filing date | May 29, 1986 |
| Grant date | Oct 10, 1989 |
| Priority date | — |
| Expiry date | May 29, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D487/04
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
5-Aroyl-1,2-dihydro-3H-pyrrolo[1,2-a]pyrrole-1,1-dicarboxylates of the formula ##STR1## are prepared from 2-halopyrroles. Hydrolysis and .beta.-decarboxylation of these compounds affords ketorolac and related compounds.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.