1: cyclohexanone With morpholine; toluene-4-sulfonic acid in toluene 1 h; RefluxInert atmosphere; 2: phenylsulfonylethylene in toluene T=20°C; RefluxInert atmosphere; 3: With water; sodium acetate; acetic acid 2 h; Reflux;

sodium acetate in acetic acid

(i), (ii) aq. HCl; Multistep reaction;