tri-ruthenium(0)dodecacarbonyl; 2-(dicyclohexylphosphino)-1-(2-methoxyphenyl)-1H-imidazole; hydrogen in methanol; toluene T=130°C; P=45004.5 Torr; 20 h; Autoclave; regioselective reaction;

magnesium Multistep reaction;

ethanol

phenyl chloroformate in benzene Heating;