Process for the preparation of substituted indoles
US6160127A · kind A · utility
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5References
19Claims
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Key dates
| Filing date | Jul 15, 1998 |
| Grant date | Dec 12, 2000 |
| Priority date | — |
| Expiry date | Jul 15, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C201/12
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for the preparation of 5,6-disubstituted indoles in which a 4-5-disubstituted-2,.beta.-nitrostyrene is subjected to a reductive cyclization in the presence of a water soluble dithionite salt.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.