Synthesis, Characterization and Kinetic Studyies of Oxazepine and Oxazepane from Reaction of 1,3-Bis (2-Hydroxy- Benzylidene)- Urea and 1,3-Bis-(dimethylamino-Benzylidene)-Urea With Maleic, Succinic and Phthalic Anhydride. ANJS 2005, 8 (2).