tri-tert-butyl phosphine; bis(dibenzylideneacetone)-palladium(0); sodium t-butanolate in toluene T=100°C; 16 h;

1: POCl3 2: Et3N 3: 92 percent / KOH / methanol; H2O / 2 h / Heating 4: Heating View Scheme

1: 92 percent / KOH / methanol; H2O / 2 h / Heating 2: Heating View Scheme

1: Et3N 2: 92 percent / KOH / methanol; H2O / 2 h / Heating 3: Heating View Scheme

1,3,4-trimethyl-imidazolidin-2-one; copper(l) iodide; potassium hydride 1) 2 h; 2) 1 h; 3) 80 deg C; Yield given. Multistep reaction;

Heating;

1: 2-(N,N-diphenylamino)thiophene With n-butyllithium in tetrahydrofuran; hexane T=-70 - 20°C; 2: With tributyltin chloride in tetrahydrofuran; hexane 3: thien-2-yl bromide With tetrakis(triphenylphosphine) palladium(0) in toluene T=80°C; 8 h;