1: lithium hydroxide hydrate / tetrahydrofuran / 5 h / 70 °C 2: sodium hydrogencarbonate; Oxonereg; / water; acetonitrile; acetone / 5 h / 0 °C 3: carbon tetrabromide; [ruthenium(2,2′-bipyridine)2Cl2] / acetonitrile / 9 h / |Irradiation View Scheme

lithium hydroxide hydrate in tetrahydrofuran T=70°C; 5 h;