Reactant involved in: 1.Asymmetric addition reactions with β-substituted cyclic enones. 2.Hydroarylation and heterocyclization with phenylpropiolates. 3.Double Suzuki-Miyaura coupling reactions. 4.Starting material for the synthesis of red electroluminescent polyfluorenes. Reactant involved in the synthesis of biologically active molecules including: 1.Phenylpyridone derivatives as MCH1R antagonists. 2.Atromentin and its O-alkylated derivatives. 3.Gelatinases and MT1-MMP inhibitors