1: (Z)-4-(4-chloro-1,2-diphenylbut-1-enyl)phenol With sodium hydride in tetrahydrofuran T=20°C; 1 h; 2: tetrahydro-2-(2-iodoethoxy)-2H-pyran in tetrahydrofuran 9 h; Heating / reflux; 3: With hydrogenchloride; water in ethanol T=20°C; Product distribution / selectivity;

hydrogenchloride; potassium carbonate 1.) DMF, 110 deg C, 2 h, 2.) MeOH, 20 deg C, 18 h; Yield given. Multistep reaction;

lithium amide; ammonia Yield given;