1: With tetrakis(triphenylphosphine) palladium(0) in 1,4-dioxane 0.333333 h; Heating; 2: With lithium diisopropyl amide in 1,4-dioxane T=0°C; 3: With palladium in 1,4-dioxane T=110°C; 2 h;

tetrakis(triphenylphosphine) palladium(0) in 1,4-dioxane 0.333333 h; Heating; Title compound not separated from byproducts;