SYNTHESIS & CHARACTERIZATION OF OXAZEPINE AND PYRROLIDIDES FROM REACTION OF N, Ń, Ň-TRIS-(4-DIMETHYLAMINO-BENZYLIDENE)-[1, 3,5]TRIAZENE-2,4,6-TRIAMINE WITH MALEIC,SUCCINIC ANHYDRIDE AND 1H- PYRROLIDENE.

N,ń,n-ًtris-(4-dimethylamino-benzylidene)-[1,3,5]triazene-2,4,6- triamine were prepared by condensation of [1,3,5]triazene-2,4,6-triamine (melamine) with o-4-dimethylamino- benzaldehyde. these schiff-bases were reacted with one equivalent of maleic,succinic anhydride in absolute ethanol to give 7-membered heterocyclic ring system of 3-{4,6-bis-[(4-dimethylaminobenzlidene)- amino]-[1,3,5]triazin-2-yl}-2-(4-dimethylamino-phenyl)-2,3-dihydro- [1,3]oxazepine-4,7-dione.addition of two equivalents of maleic,succinic anhydride gave of 8-{4-[(4-dimethylamino-benzylidene)-amino]-6-[4- dimethylamino-phenyl)-4,7-dioxo-4,7-dihydro-[1,3]oxazepine-3-yl]-[1,3,5]triazin- 2-yl}-7-(4-dimethylamino -phenyl)-7,8-dihydro-6-oxa-8-aza-benzocycloheptene- 5,9-dione.i.e, two distant 7-membered rings. which were reacted with pyrrolidine to give anilid-pyrrolidine derivatives of maleic and succinic. the synthesized compounds were confirmed by their ir, 1h nmr, uv, spectra and c.h.n. analysis