ammonium hydroxide; n-Bu3SnH; CuCN

copper(l) iodide; potassium carbonate; triethylamine; tetrakis(triphenylphosphine) palladium(0) in tetrahydrofuran; methanol 1) Me3SiCCH, Pd(PPh3)4, CuI,Et3N in THF, room temp., 2 h; 2) K2CO3 in MeOH, room temp., 2 h; 3)(n-Bu)Sn(n-Bu)CuCNLi2 in THF, -30°C for 1.5 h;

PtBu3; cesium fluoride; tris(dibenzylideneacetone)dipalladium (0) in 1,4-dioxane T=80°C; Stille reaction; 2 h;

triphenyl-arsane; bis(dibenzylideneacetone)-palladium(0) in 1-methyl-pyrrolidin-2-one T=50°C; Substitution; Stille reaction; 5 h;