tributylphosphine; tris(dibenzylideneacetone)dipalladium(0) chloroform complex in acetonitrile 20 h; Heating;

ruthenium(II)-carbonyl-tris(triphenylphosphine) dihydride; acetic acid; 9,9-dimethyl-4,5-bis(diphenyl-phosphino)xanthene in toluene 24 h; Inert atmosphereReflux;

9,9-dimethyl-4,5-bis(diphenyl-phosphino)xanthene in toluene 24 h; Heating; Title compound not separated from byproducts.;

ruthenium(II)-carbonyl-tris(triphenylphosphine) dihydride; acetic acid; 9,9-dimethyl-4,5-bis(diphenyl-phosphino)xanthene in toluene 24 h; Inert atmosphereReflux;

1: 1-phenylpent-2-yne-1,4-diol With ruthenium(II)-carbonyl-tris(triphenylphosphine) dihydride; 9,9-dimethyl-4,5-bis(diphenyl-phosphino)xanthene in toluene 0.5 h; Inert atmosphereReflux; 2: phenethylamine in toluene 23.5 h; Inert atmosphereReflux;

9,9-dimethyl-4,5-bis(diphenyl-phosphino)xanthene in toluene 24 h; Heating; Title compound not separated from byproducts.;