1: With sodium hydroxide in water; chlorobenzene 3.5 h; Heating / refluxunder nitrogen; 2: With copper(l) iodide; tri[2-(2-methoxyethoxy)ethyl]amine 16 h; Heating / reflux; 3: With copper(l) iodide; tri[2-(2-methoxyethoxy)ethyl]amine 16 h; Heating / reflux;