Synthesis and Characterization of 1,3-Oxazepindion Derivatives via Diformylbenzene Imines as Precursors

In this paper, 1,3-oxazepindione derivatives [D] and [E] were prepared by reacting Schiff bases di Azomethine [A], [B], and [C] with maleic anhydride and succinic anhydride in the presence of dried benzene as a solvent. Schiff bases di Azomethine [A], [B], and [C] were prepared by reacting Terephthalaldehyde, Isophthalaldehyde, or o-Phthalaldehyde with 5 drops of glacial acetic acid as a catalyst and halo-aniline derivatives in absolute ethanol as a solvent. The prepared compounds were diagnosed and confirmed by using infrared and nuclear magnetic resonance spectroscopies. All the reactions of the prepared compounds were monitored by TLC.