1,1'-bis-(diphenylphosphino)ferrocene; (1,1'-bis(diphenylphosphino)ferrocene)palladium(II) dichloride; Na2S2O3 pentahydrate; caesium carbonate in ethylene glycol; dimethyl sulfoxide T=120°C; Schlenk techniqueInert atmosphereGreen chemistry;

sodium methylate in methanol; toluene 4 h; Heating;