Process for making 2, 5-substituted pyridine
US6420565B2 · kind B2 · utility
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8Claims
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Key dates
| Filing date | Feb 27, 2001 |
| Grant date | Jul 16, 2002 |
| Priority date | — |
| Expiry date | Feb 27, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D213/61
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
2-lithio-5-halopyridine is formed as a predominant component of a reaction mixture by reacting BuLi with 2,5-dihalopyridine in a non-coordinating solvent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.