Reactions of the substituted 2-formyl chromones with aroylhydrazines gave corresponding 2-(aroylhydrazonomethylidyne) chromones. Then 2-(3′-acetyl- 5′-aryl-2′,3′-dihydro-1′,3′,4′-oxadiazol- 2′-yl) chromones were prepared by these 2-(aroylhydrazonomethylidyne) chromones under refluxing with Ac2O. All target compounds were characterized through elemental analysis and IR, 1H NMR, MS.
Cao, Ling-Hua,Cui, Peng-Yuan
p. 903 - 908
(2007/10/03)
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