1: o-hydroxyacetophenone With sodium hydride in tetrahydrofuran Claisen Condensation; 1.167 h; Reflux; 2: 3-phenyl-propionic acid ethyl ester in tetrahydrofuran T=20°C; Claisen Condensation; 24.25 h;

sodium hydride in tetrahydrofuran; mineral oil Inert atmosphereReflux;

hydrogenchloride in acetic acid T=120°C; 0.75 h;