Abstract
Various 2-amino-4H-pyran-3-carbonitriles 1 and 2 were successfully synthesized, via a one-pot three-component condensation reaction of arylaldehyde and malononitrile with methyl acetoacetate and 8-hydroxyquinoline, respectively in moderate yields. These key intermediates 1 and 2 undergo rapid condensation with formic acid and acetic anhydride to give, respectively the corresponding pyranes 3–6 and pyranopyrimidinones 7 and 8. All the synthesized compounds were completely characterized by 1H NMR, 13C NMR, IR and ES-HRMS.
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