Process for production of phenoxy-substituted 2-pyridone...

Details Process for production of phenoxy-substituted 2-pyridone... Process for production of phenoxy-substituted 2-pyridone...

2007-03-13

2007-03-13

Davis, Zinna N. (Department: 1625)

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

Reexamination Certificate

active

10513373

ABSTRACT:
3-Phenoxy-2-pyridone compound can be produced by making the amide compound of the formula (1):wherein R is optionally substituted phenyl;react with a malonoaldehyde derivative such as 3-alkoxypropenal and the like in the presence of a protonic acid.

REFERENCES:
patent: 6537948 (2003-03-01), Tohyama et al.
patent: 2000-119252 (2000-04-01), None
patent: 2003-48886 (2003-02-01), None
Bonsall, C., et al., “8-Azachromones”,J. Chem. Soc. (C), pp. 1836-1839 (1967).
Kato, T., et al., “Synthesis of Methylpyridine Deriviatives XXXIV. Condensation of Acetoacetamide with Ketones to form Pyridone Derivatives”,Chem. Pharm. Bull., vol. 28, No. 7, pp. 2244-2247 (1980).

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