3-HYDROXY-6H-BENZO [C] CHROMENE-6-ONE DERIVATIVE AND MANUFACTURING METHOD THEREOF

摘要

A method for producing a compound represented by formula (III) or a salt thereof, which is characterized by causing a compound represented by formula (I) or a salt thereof and a compound represented by formula (II) or a salt thereof to react with each other in the presence of a carbonate salt and a copper salt or in the presence of a hydroxide salt, a carbonate salt and a copper salt.