tris-(dibenzylideneacetone)dipalladium(0); ammonia; caesium carbonate; [2'-(di-tert-butyl-phosphanyl)-biphenyl-2-yl]-dimethyl-amine in 1,4-dioxane T=120°C; 24 h; Inert atmosphereMolecular sieve;

Multi-step reaction with 2 steps 1: ethanolic sodium ethylate; copper-powder