Process for preparing 2-oxindole
US5973165A · kind A · utility
3Cited by
0References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 17, 1999 |
| Grant date | Oct 26, 1999 |
| Priority date | — |
| Expiry date | Mar 17, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D209/34
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for preparing 2-oxindole includes catalytically reacting isatin with hydrazine hydrate in a polar solvent containing a dissolved weak base at an elevated temperature to form the 2-oxindole product.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.