Benzoxazines and benzothiazines having c n s and

摘要

(A) Benzoxazines and benzothiazines: (I) where Ar = (X')n-aryl R = H, lower alkyl or (X2)n-aryl R1,R" = H or R1 + R" = O Y = O, S, SO or SO2 X,X1,X2 = H, lower alkyl, alkoxy, NH2, dialkylamino, halogen, lower alkylthio, OH, CN, NO2 or CF3 n = 1 - 3 m = 0 - 3 A = lower alkylene B = basic N-contng. group. (B) Optical isomers and salts of (I). C.N.S. agents, esp. depressants; antibacterials intermediates. 3-(2-(dimethylamino)ethyl)2, 3-dihydro-2-phenyl-4H-1, 3-benzothiazin-4-one HCl, m. 198-200 deg.