The Synthesis and Light Absorption Behaviour of Novel Coumarin Chromophores

  • Received : 2013.10.15
  • Accepted : 2014.04.01
  • Published : 2014.06.20


The synthetic route to coumarin systems is well established and one approach of particular interest leads to the intermediate 7-diethylamino-3-formylcoumarin. A combination of the N,N-diethylamino-coumarin donor with a wide range of acceptor groups of varying electron withdrawing strength should permit the synthesis of a series of extended coumarin dyes with absorption maxima range from 500 to 600 nm, or even beyond. In this communication, a novel efficient synthesis of indoles, benzothiazole and benzoxazole based on coumarin chromophores were achieved and the coloristic and fluorophoric properties of these chromophores were studied.


Coumarin;Knoevenagel condensation;Fluorescence;Chromophores


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