Process for preparing 2-cyano-3,5-dimethyl-4-methoxypyridine

Details Process for preparing 2-cyano-3,5-dimethyl-4-methoxypyridine Process for preparing 2-cyano-3,5-dimethyl-4-methoxypyridine

1996-07-22

1997-04-29

Ivy, C. Warren

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

546288, 546298, 549420, 568417, C07D21312

Patent

active

056250690

ABSTRACT:
A process of preparing 2-cyano-3,5-dimethyl-4-methoxypyridine. The process includes the steps of: acylating 2-methyl-1-penten-1-alkoxy-3-one to obtain 2-alkoxycarbonyl-3,5-dimethyl-4-pyrone; ammonolyzing 2-alkoxycarbonyl-3,5-dimethyl-4-pyrone to obtain 2-carboxamido-3,5-dimethyl-4(1H)-pyridone; methylating 2-carboxamido-3,5-dimethyl-4(1H)-pyridone to obtain 2-carboxamido-3,5-dimethyl-4-methoxypyridine; and dehydrating said 2-carboxamido-3,5-dimethyl-4-methoxypyridone to obtain 2-cyano-3,5-dimethyl-4-methoxypyridine.

REFERENCES:
patent: 4255431 (1981-03-01), Junggren et al.
patent: 5066810 (1991-11-01), Baumann
March, J., Advanced Organic Chemistry: Reactions, Mechanisms, and Structure, 4th Ed., 1992, pp. 421-423 and 1041-1042.
Castellanos, M.L. et al, J. Chem. Soc. Perkin Trans. I, 1985, 6, pp. 1209-1215.
Xue, T. et al, Huaxue Xuebao, 1986, 44(11), pp. 1129-1133.

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