potassium phosphate; tetrakis(triphenylphosphine) palladium(0) in 1,4-dioxane T=50°C; 5 h; Inert atmosphere; SolventReagent/catalyst;

1: (E)-4-(2-hydroxy-phenyl)-3-butylene-2-one; malonic acid dimethyl ester With methanol; sodium methylate 4 h; Heating; 2: With sodium hydroxide 1 h; Heating; 3: methanol With iodine 3 h; Heating;