sodium hydroxide in ethanol 4 h; Ambient temperature;

1: 81 percent / NaH / tetrahydrofuran / 16 h / Heating 2: 81 percent / 2,3-dichloro-5,6-dicyanobenzoquinone, AcOH / tetrahydrofuran / 16 h / Ambient temperature 3: 40 percent / aq. NaOH / 2 h / Heating View Scheme

1: 81 percent / 2,3-dichloro-5,6-dicyanobenzoquinone, AcOH / tetrahydrofuran / 16 h / Ambient temperature 2: 40 percent / aq. NaOH / 2 h / Heating View Scheme

1: 67 percent / AlCl3 2: 81 percent / NaH / tetrahydrofuran / 16 h / Heating 3: 81 percent / 2,3-dichloro-5,6-dicyanobenzoquinone, AcOH / tetrahydrofuran / 16 h / Ambient temperature 4: 40 percent / aq. NaOH / 2 h / Heating View Scheme

sodium hydroxide 2 h; Heating;