1: 4-(4-chlorophenyl)-piperidin-4-ol With sodium carbonate; potassium iodide in 4-hydroxymethyl-1,3-dioxolane 0.25 h; 2: N-(dihydro-3,3-diphenyl-2(3H)-furanylidene)-N-methylmethanaminium bromide in 4-hydroxymethyl-1,3-dioxolane T=60°C; 2 h; 3: With hydrogenchloride in 4-hydroxymethyl-1,3-dioxolane; isopropyl alcohol 0.333333 h;

potassium iodide; sodium carbonate in hydrogenchloride; isopropyl alcohol; acetone; toluene