tetrakis(triphenylphosphine) palladium(0); lithium chloride in tetrahydrofuran 3 h; Heating;

1: 57 percent / 2,6-di-t-butyl-4-methylpyridine / 1,2-dichloro-ethane / 2 h / Heating 2: 47 percent / (Ph3P)4Pd, LiCl / tetrahydrofuran / 3 h / Heating View Scheme