hydrogen; palladium on activated charcoal in methanol T=20°C; P=760 Torr; 2 h;

1,10-phenanthroline; carbon monoxide; 1,3-bis-(diphenylphosphino)propane; bis(dibenzylideneacetone)-palladium(0) in N,N-dimethyl-formamide T=80°C; P=4560 Torr;