T=235 - 245°C; 3 h; Yield given. Yields of byproduct given. Title compound not separated from byproducts;

sodium t-butanolate; 2-(dicyclohexylphosphino)-2',4',6'-tri-i-propyl-1,1’-biphenyl; tris-(dibenzylideneacetone)dipalladium(0) in 1,4-dioxane T=110°C; 20 h;