We describe a set of three fluorescent mesoionic benzo[4,5]imidazo-3-ide-[1,2-c]-2-alkyl-1,2,3-triazol-2-ium compounds obtained through a simple, concise and efficient synthetic sequence featuring a copper-catalyzed carbene–nitrene cyclization. The compounds were characterized by fluorescence spectroscopy highlighting promising photophysical properties in terms of quantum yields and Stokes shifts.
我们描述了一组通过简单,简洁的方法获得的三种荧光中性苯并[4,5]咪唑基-3-ide- [1,2 - c ] -2-烷基-1,2,3-三唑-2-鎓化合物高效的合成序列,具有铜催化的卡宾-丁二烯环化反应。通过荧光光谱对化合物进行表征,其在量子产率和斯托克斯位移方面突出了有前途的光物理性质。通过计算DFT和TD-DFT方法使实验性质合理化,并且与结构和光谱数据具有极好的一致性。