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5167963 
Journal Article 
Synthesis and spectroscopic studies of some new oxazepine derivatives throughout 2+5 cycloaddition reactions (III) 
Mahrath, AJ; Aowda, SA; Kamil, SN 
2013 
1 
Research on Chemical Intermediates
ISSN: 0922-6168
EISSN: 1568-5675 
39 
8 
3739-3752 
English 
WOS:000324512900023 
The present work included condensation reactions of o-tolidine with different aromatic aldehydes in absolute ethanol to give Schiff bases (w (9) -w (12) ) in high yield which, on reaction with maleic and phthalic anhydride by [2+5] cycloaddition reactions in the presence of suitable solvents, give the corresponding [1,3]oxazepine-4,7-dione (w (9) m-w (12) m) and [1,3]oxazepine-1,5-dione (w (9) ph-w (12) ph), respectively. The structure of the newly synthesized compounds were monitored by TLC and established on the basis of elemental analysis, FT-IR, and H-1 NMR. 
Chemistry; Imines, o-Tolidine, 1,3-Oxazepine-4,7-dione