1: With oxygen; [Cu(bpy)(BF4)2(H2O)2(bpy)]n in ethanol; water T=0°C; P=760 Torr; 5 h; 2: With triethyl phosphite in ethanol; water

1.1: LDA / tetrahydrofuran 1.2: Et3N 2.1: O2 / [Cu(bpy)(BF4)2(H2O)2(bpy)]n / ethanol; H2O / 5 h / 0 °C / 760 Torr 2.2: 81 percent / triethyl phosphite / ethanol; H2O View Scheme

benzeneseleninic anhydride; sodium hydride in toluene 10 h; Heating; Yield given. Yields of byproduct given;