Abstract
A new series of heterocyclic systems, including azole, azolopyrimidine, and pyridopyrimidine derivatives, attached to 2
H
-chromene scaffold, was prepared by a convenient procedure through the reactions of (
E
)-2-dimethylamino-methylene chromanone with different nitrogen binucleophiles. Various substituted chromeno[4,3-
b
]pyridine derivatives were also prepared through the reactions of (
E
)-2-dimethylaminomethylene chromanone with a series of active methylene compounds.