SYNTHESIS AND SPECTRAL PROPERTIES OF SUBSTITUTED 4-CHLOROOXAZOLOQUINOLINES

The treatment of a mixture of linearly and angularly annelated 2-subst ituted oxazolo[4,5-f]-quinolones (5a-c) and oxazolo[5,4-g]quinolones ( 6a-c) and similarly the treatment of 2-substituted oxazolo[5,4-f]quino lones (7a-c) and oxazolo[4,5-g]quinolones (8b, c) with POCl3 afforded substituted 4-chlorooxazolo[4,5-f]quinolines (9a-c) and 2-substituted 4-chlorooxazolo[5,4-f]quinolines (10b, c), respectively. Spectral char acteristics of the synthesized derivatives (H-1 and C-13 NMR, IR, UV, and MS) are discussed.