triphenylphosphine in chloroform-d1 under N2; mixt. of Ru complex and PPh3 is heated in CDCl3 at 35°C for 8 h; TLC, monitored by NMR, IR, elem. anal.;

carbon monoxide in cyclohexane under N2; CO is passed through glass frit into soln. of Ru complex in refluxing cyclohexane for 75 min; cooling, evapn., column chromy. (Florisil, light petroleum),IR;

in Petroleum ether under N2; mixt. is heated in refluxing light petroleum for 30 min; chromy. (Florisil);