7169-34-8

white to light yellow crystal powde

3-Coumaranone is used in the aurones, [2-benzylidenebenzofuran-3(2H)-ones] by reacting with appropriate aldehyde. It is involved in the condensation reaction with aldehydes in the presence of morpholine acetate to prepare substituted 2-(arylidene)benzofuran-3(ZH)-ones. In Horner-Wadsworth-Emmons reaction, it reacts with diethyl? cyanomethyl?phosphonate to give 3-(cyanomethyl)benzofurans, which is an intermediate in the synthesis of antihyperglycemic agents.

At room temperature and pressure, 0.2 mmol of 2-ethynylphenol was dissolved in 1 mL of dichloromethane to obtain a dichloromethane solution of 2-ethynylphenol; then 0.01 mmol of mercury trifluoromethanesulfonate and 0.24 mmol of pyridine-N-oxide were adde