1: 0.07 M sodium acetate/ 0.02 M acetic acid 2: 88 percent / 2 N acetic acid / 24 h / 28 °C / ultrasonic bath View Scheme

1: 27 percent / active MnO2, CH3COONa / acetone / 60 h / Ambient temperature 2: 80 percent / 2 N HCl / methanol; H2O / 24 h / Ambient temperature View Scheme