Process for the preparation of benzimidazo[1,2-a] benzimidazoles
US10570136B2 · kind B2 · utility
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11Claims
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Key dates
| Filing date | Jul 26, 2016 |
| Grant date | Feb 25, 2020 |
| Priority date | — |
| Expiry date | Jul 26, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D487/04
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to process for the preparation of a compound of formula (I), comprising heating a compound of formula (II) in the presence of a catalyst and a base in a solvent at elevated temperature. The compounds of formula (I) can be produced by the process easily, with excellent yield and purity and at low cost.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.