carbon monoxide; 1,3-bis-(diphenylphosphino)propane; 1,10-phenanthroline monohydrate; bis(dibenzylideneacetone)-palladium(0) in N,N-dimethyl-formamide T=120°C; P=4560 Torr; 96 h;

<b>Multi-step reaction with 2 steps<br /> </b>1: 72 percent / K₂CO₃ / dimethylsulfoxide / 4 h / 85 - 90 &deg;C<br />2: 100 percent / K₂CO₃ / acetone / 2 h / Heating<br /> <br /> &nbsp;