1: 4-hydroxy-acetophenone With sodium hydride in tetrahydrofuran 1 h; Inert atmosphereReflux; 2: benzoic acid methyl ester in tetrahydrofuran Claisen condensation; 12 h; Inert atmosphere;

oxalic acid in tetrahydrofuran; methanol; ethanol; dichloromethane; mineral oil

ammonia; sodium amide und anschliessend mit Methylbenzoat in Aether;