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The synthesis of pyridine derivatives from 3-formylchromone

โœ Scribed by Georges Haas; James L. Stanton; Andreas Von Sprecher; Paul Wenk


Book ID
112126404
Publisher
Journal of Heterocyclic Chemistry
Year
1981
Tongue
English
Weight
540 KB
Volume
18
Category
Article
ISSN
0022-152X

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## Abstract Enol lactones such as 4-hydroxy-6-methyl-2H-pyran-2-one (triacetic acid lactone, TAL) and 4-hydroxycoumarin when treated with 2-amino-3-formylchromone under basic conditions afforded 3-acetoacetyl benzopyranopyridones and benzopyranopyridines, respectively. A series of pyrazole derivati