oxygen; 5,15,10,20-tetraphenylporphyrin; triphenylphosphine 1.) CH2Cl2, -70 deg C, irradiation, 2 h, 2.) -70 deg C, 10 min; Yield given. Multistep reaction;

hydrogenchloride; ammonia; sodium cyanoborohydride in methanol

sodium hydroxide; Raney Ni alloy in ethanol 1 h; Ambient temperature; Yield given;