1,2-bis-(diphenylphosphino)ethane; bis(dibenzylideneacetone)-palladium(0) in dimethyl sulfoxide T=85°C; 2 h;

1: 55 percent / bis(dibenzylideneacetone)palladium, 1,2-bis(diphenylphosphino)ethane / dimethylformamide / 4 h / Ambient temperature 2: 76 percent / bis(dibenzylideneacetone)palladium, 1,2-bis(diphenylphosphino)ethane / dimethylsulfoxide / 2 h / 85 °C View Scheme

sodium