Fig. 8.
Synthetic scheme II. Reagents and conditions: (a) AcOH/ EtOH, Reflux 2-3 hrs, -H2O (b) NH2NH2.H2O, Pd/C, EtOH, reflux 2.
Synthetic scheme II. Reagents and conditions: (a) AcOH/ EtOH, Reflux 2-3 hrs, -H2O (b) NH2NH2.H2O, Pd/C, EtOH, reflux 2.