sodium hydroxide; tetrasodium salt; cobalt tetrasulphophthalocyanine; oxygen in water T=20°C; P=760 Torr; 2.5 h;

sodium hydroxide; sodium thiosulfate; sodium chloride 1) EtOH, H2O, reflux, 30 min., 2) H2O, CHCl3, 7 h; Yield given. Multistep reaction. Further byproducts given. Yields of byproduct given;