Process for the preparation of indoles
US4659841A · kind A · utility
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25Claims
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Key dates
| Filing date | Jul 5, 1985 |
| Grant date | Apr 21, 1987 |
| Priority date | — |
| Expiry date | Jul 5, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/582
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for preparing indoles in high yield by reacting anilines and 1,2-glycols in a liquid phase in the presence of a cadmium bromide or iodide/potassium bromide or iodide catalyst. The used catalyst can be easily recovered and when reused, exhibits excellent performance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.