2,3-dicyano-5,6-dichloro-p-benzoquinone in chlorobenzene Oxidation; 2 h; Heating;

1: 95 percent / 2,3-dichloro-5,6-dicyano-1,4-benzoquinone / chlorobenzene / Heating 2: 84 percent / triethyl phosphite / 5 h / 120 °C 3: 100 percent / sodium methoxide / tetrahydrofuran; methanol / 0.5 h / Heating View Scheme

1: 2,3-dicyano-5,6-dichloro-p-benzoquinone / toluene / |Inert atmosphere; |Reflux 2: triethyl phosphite / 130 °C / |Inert atmosphere 3: sodium methylate; methanol / tetrahydrofuran / |Inert atmosphere View Scheme