Synthesis Characterization of Some New Heterocyclic Compounds Containing1, 3-Oxazepine Ring

In this work a series of 1, 3-oxazepine derivatives have been synthesized throughout two steps. first step synthesis of imines derivatives (a1-a7) via the condensation reaction of 4-hydroxy benzaldehyde with different substituted amines by using catalytic amount of glacial acetic acid, while the second step involves reactions of the prepared imines (a1-a7) via maleic anhydride by [2+5] cycloaddition in dry benzene and refluxing it to produce 1, 3 - oxazepine - 4, 7 - dione derivatives (a1m-a7m) respectively. the prepared compounds were characterized by c.h.n.s micro analysis, some physical properties and spectral methods (ir , h1-nmr).