hydrogen; palladium on activated charcoal in methanol 0.75 h;

carbon monoxide; 1,3-bis-(diphenylphosphino)propane; 1,10-phenanthroline monohydrate; bis(dibenzylideneacetone)-palladium(0) in N,N-dimethyl-formamide T=80°C; P=4560 Torr; 72 h;