Synthesis and Characterization of 2-(2-hydroxyphenyl)- 3-(6-R- benzothiazol- 2-yl)- 2,3-dihydro- [l,3Joxazepine-4,7-dione and 2-(2- hydroxy-phenyl)-6-methyl-3-(6-R-benzothiazol-2-yl)- 2,3-dihydro-[ 1,3joxazepine-4,7-dione ./1/

2-[(6-R-benzo111iazo 1-2-yliminoj-jnethyl]-phenols {Schiff bases) were prepared by condensation of 6-R-2-amino benzothiazol with Saiicyldehyde.These Schiff bases were found to react with maleic anhydride and citraconic anhydride to give 2-(2-hydroxy- phenyl)-3-(6-R-benzothiazoI-2-yI)- 2,3- dihydro-[1,3]oxazepine-4,7-dionc and 2-(2-hydrox ,-pheny|)-6-niethyi-3-(6-R-benzothiazol-2-yl)2.3- dihydroj 1.3 )oxazepinc-4.7-dione. which were reacted with pyrrolidine to give anilid-pyrrolidine derivatives of maleic and citraconic