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US 7,256,295 B2Granted
Process for producing 2,3-diamino-6-methoxypyridine
AssigneeJubilant Organosys Limited
InventorsD. B. Thakare, Yashbir Singh, Ashutosh Agarwal
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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.
Claims22
A process for producing 2,3-diamino-6-methoxypyridine comprising neutralizing 2,3-diamino-6-methoxypyridine dihydrochloride with a base in the presence of a polar solvent.
Dependencies are inferred from the claim text.