methyl-ethyl phosphite; tetrabutyl ammonium fluoride; tris-(dibenzylideneacetone)dipalladium(0) in 1,4-dioxane T=101°C; Stille reaction; 3 h;

tetrabutyl ammonium fluoride; tetrakis(triphenylphosphine) palladium(0) in 1,4-dioxane T=101°C; Stille reaction; 12 h;