Synthesis and Characterization of New Seven-Membered Heterocyclic Compounds from Reaction of New Schiff-Bases with Maleic and Phthalic anhydrides

Abstract

A series of new Schiff base and 1,3-Oxazepine compounds have been
synthesized. 4-Aminophenazone was condensed with various aromatic aldehydes in
ethanol in the presence of glacial acetic acid as catalyst to yield the Schiff base [2-4].
These Schiff bases were reacted with maleic anhydride and phthalic anhydride in dry
benzene to give a seven-membered heterocyclic ring derivatives [5-7] and [8-10],
respectively.
The prepared compounds were identified by their uncorrected melting points,
elemental analysis and FT-IR spectra.