abstract |
The present invention relates to a novel process for the preparation of 5,7-difluorochroman-4-one derivatives. The production method of the present invention can be industrially mass-produced using a commercially available reagent and a solvent which do not require a separate purification step, have a low manufacturing cost, and are not subject to environmental regulations. Thus, 5,7-difluoro It is possible to effectively produce chroman-4-one derivatives. |