carbonylchlorohydridetris(triphenylphosphine) ruthenium(II); ammonia; 9,9-dimethyl-4,5-bis(diphenyl-phosphino)xanthene in 1,1-dimethylpropan-1-ol T=150°C; P=12001.2 Torr; 20 h; Inert atmosphereAutoclave; chemoselective reaction;