5,10,15,20-tetrakis-pentafluorophenyl-21H,23H-porphyrin iron(III) chloride; iodosylbenzene in dichloromethane T=20°C; Further byproducts given;

Collins oxidation agent in dichloromethane 0.75 h; Ambient temperature;

1: 92 percent / triethylamine, sulfur trioxide, pyridine / dimethylsulfoxide / 1 h / Ambient temperature 2: 65 percent / anhyd. AlCl3 / 0.05 h / 180 - 185 °C View Scheme