Facile synthesis and fluorescent properties of coumarin-7 and its isomer 4-(2-benzimidazolyl)-7-(diethylamino) coumarin

摘要

Coumarin-7 and its isomer 4-(2-benzimidazolyl)-7-(diethylamino) coumarin were synthesised using condensation of the corresponding formylcoumarin with o-phenylenediamine as the key step. Moreover, absorption and fluorescence emission spectra of these two coumarins were recorded.