2,3-dicyano-5,6-dichloro-p-benzoquinone in xylene 20 h; Heating;

aluminum oxide in benzene 0.75 h; Heating;

1: 96 percent / HI, glacial acetic acid 2: N-bromosuccinimide, benzoyl peroxide / CCl4 / 3 h / Heating 3: acetone / 20 h / Heating 4: 87 percent / KOH / ethane-1,2-diol; H2O / 24 h / Heating 5: 21 percent / anhydrous HF 6: NaBH4 / tetrahydrofuran; methanol 7: Al2O3 / benzene / 0.75 h / Heating View Scheme

1: N-bromosuccinimide, benzoyl peroxide / CCl4 / 3 h / Heating 2: acetone / 20 h / Heating 3: 87 percent / KOH / ethane-1,2-diol; H2O / 24 h / Heating 4: 21 percent / anhydrous HF 5: NaBH4 / tetrahydrofuran; methanol 6: Al2O3 / benzene / 0.75 h / Heating View Scheme

T=1200°C; P=0.01 Torr; flash vacuum thermolysis;