1: 9,9-dimethyl-4,5-bis(diphenyl-phosphino)xanthene; carbonyl-bis(trifluoroacetato)bis(triphenylphosphino)ruthenium(II) / toluene / 6 h / 175 °C / vacuum-sealed tube 2: 9,9-dimethyl-4,5-bis(diphenyl-phosphino)xanthene; ruthenium(II)-carbonyl-tris(triphenylphosphine) dihydride / toluene / 0.5 h / 135 °C / vacuum-sealed tube View Scheme

carbonyl-bis(trifluoroacetato)bis(triphenylphosphino)ruthenium(II); 9,9-dimethyl-4,5-bis(diphenyl-phosphino)xanthene in toluene T=175°C; 6 h; vacuum-sealed tube; Product distribution / selectivity;

tris(pentafluorophenyl)-borane; water in dichloromethane T=20°C; 16 h; Inert atmosphere;

tris(pentafluorophenyl)-borane in dichloromethane T=20°C; 16 h; Inert atmosphere; Overall yield = 99 percent;

1: tris(pentafluorophenyl)-borane / dichloromethane / 16 h / 20 °C / |Inert atmosphere 2: tris(pentafluorophenyl)-borane / dichloromethane / 32 h / 20 °C / |Inert atmosphere View Scheme

carbonyl-bis(trifluoroacetato)bis(triphenylphosphino)ruthenium(II); 9,9-dimethyl-4,5-bis(diphenyl-phosphino)xanthene in toluene T=175°C; 6 h; vacuum-sealed tube; Product distribution / selectivity;

carbonyl-bis(trifluoroacetato)bis(triphenylphosphino)ruthenium(II); 9,9-dimethyl-4,5-bis(diphenyl-phosphino)xanthene in toluene T=175°C; 6 h; vacuum-sealed tube; Product distribution / selectivity;