Construction of 7-Diethylaminocoumarins Promoted by an Electron-Withdrawing Group

The coumarin skeleton has been a focus of attention for many years, and its fluorescence properties vary depending on the substituents. Fluorescent coumarin derivatives are useful tools for many strategies have been developed for their synthesis. Although 7-diethylaminocoumarin has excellent fluorescence properties, it is unstable. We have developed a facile strategy for the synthesis of 7-diethylaminocoumarin derivatives by increasing the...