potassium carbonate in acetone 10 h; Heating;

1: 0.16 g 2: 20 mg / DDQ View Scheme

1: 33.3 percent / potassium persulphate, sodium hydroxide / H2O 2: 80 percent / methanol; diethyl ether 3: 85 percent / pyridine / 1 h / 100 °C 4: 75 percent / potassium hydroxide / pyridine / 4 h / 60 °C 5: 80 percent / glacial acetic acid, sodium acetate / 4 h / Heating View Scheme

1: 80 percent / methanol; diethyl ether 2: 85 percent / pyridine / 1 h / 100 °C 3: 75 percent / potassium hydroxide / pyridine / 4 h / 60 °C 4: 80 percent / glacial acetic acid, sodium acetate / 4 h / Heating View Scheme

1: 75 percent / potassium hydroxide / pyridine / 4 h / 60 °C 2: 80 percent / glacial acetic acid, sodium acetate / 4 h / Heating View Scheme

2,3-dicyano-5,6-dichloro-p-benzoquinone

1: 0.16 g 2: 20 mg / DDQ View Scheme

potassium hydroxide in methanol