Fig. 9. Outline of the synthesis of the benzoxazolone bioisostere 7. Reagents and reaction conditions: (a) RhCl3 . 3 H2O, EtOH, HCl, 90°C, 2 h; yield 32 % [22].
Fig. 9. Outline of the synthesis of the benzoxazolone bioisostere 7. Reagents and reaction conditions: (a) RhCl3 . 3 H2O, EtOH, HCl, 90°C, 2 h; yield 32 % [22].