dicobalt octacarbonyl; tri-ruthenium(0)dodecacarbonyl; carbon monoxide in benzene T=200 - 220°C; P=41040 Torr; 72 h;

1: 1.) n-BuLi / 1.) ether, hexane, RT, 4 h, 2.) ether, hexane, RT, overnight 2: 92 percent / CO, Co2(CO)8, Ru3(CO)12 / benzene / 72 h / 200 - 220 °C / 41040 Torr View Scheme

1: 1.) n-BuLi / 1.) ether, hexane, RT, 4 h, 2.) ether, hexane, RT, overnight 2: 92 percent / CO, Co2(CO)8, Ru3(CO)12 / benzene / 72 h / 200 - 220 °C / 41040 Torr View Scheme

in cyclohexane 8 h; Irradiation;