Process for producing 2,3-diamino-6-methoxypyridine
US7256295B2 · kind B2 · utility
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22Claims
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Key dates
| Filing date | Aug 3, 2005 |
| Grant date | Aug 14, 2007 |
| Priority date | — |
| Expiry date | Nov 8, 2025 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61Q5/10
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The present invention relates to a novel process for producing 2,3-diamino-6-methxoypyridine. The process comprises neutralizing 2,3-diamino-6-methoxy pyridine dihydrochloride, which, in turn, is prepared by the reduction of 2-amino-6-methoxy-3-nitropyridine. The 2-amino-6-methoxy-3-nitropyridine is further prepared by methoxylation of 2-amino-6-chloro-3-nitropyridine by sodium methoxide in methanol.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.