palladium diacetate; tetrabutylammomium bromide; N-ethyl-N,N-diisopropylamine in isopropyl alcohol; toluene T=105°C; 24 h;

pyridine 1-oxide; Pd-Pt/C; phosphorus pentachloride 1) 140 to 150 deg C, 18 h, pyridine, 2) POCl3, 18 h, reflux, 2 h; Yield given. Multistep reaction. Yields of byproduct given;