Process for preparing N,N'-carbonyldiazoles
US7102012B2 · kind B2 · utility
1Cited by
2References
14Claims
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Key dates
| Filing date | May 11, 2005 |
| Grant date | Sep 5, 2006 |
| Priority date | — |
| Expiry date | May 11, 2025 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D233/54
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process is provided for preparing N,N′-carbonyldiazoles by reacting azoles with phosgene in halogenated aliphatic hydrocarbon solvents, the entirety of the azole for reaction being introduced in the solvent, followed by the addition of phosgene.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.