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Benzopyranopyridine derivatives. 2. Reaction of azaxanthones with hydroxylamine

✍ Scribed by Villani, Frank J.; Hannon, Janet; Wefer, Elizabeth A.; Mann, Thomas A.; Morton, James B.

Book ID
118745120
Publisher
American Chemical Society
Year
1975
Tongue
English
Weight
518 KB
Volume
40
Category
Article
ISSN
0022-3263

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Novel benzopyranopyridine derivatives of
Novel benzopyranopyridine derivatives of 2-amino-3-formylchromone
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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