A convenient approach to the design and synthesis of indolo[3,2-c]coumarins via the microwave-assisted Cadogan reaction
作者:Roman A. Irgashev、Arseny A. Karmatsky、Pavel A. Slepukhin、Gennady L. Rusinov、Valery N. Charushin
DOI:10.1016/j.tetlet.2013.08.030
日期:2013.10
prepared from salicylaldehydes and 2-(4,5-dimethoxy-2-nitrophenyl)acetonitrile by means of the Perkin condensation. Further cyclization of these 3-aryl coumarins through the microwave-assisted Cadogan reaction afforded the corresponding indolo[3,2-c]coumarins in good to excellent yields.
在水杨醛和2-(4,5-二甲氧基-2-硝基苯基)乙腈中,通过Perkin制备了在香豆素系统的苯环上带有各种取代基的3-(4,5-二甲氧基-2-硝基苯基)香豆素。缩合。这些3-芳基香豆素通过微波辅助的Cadogan反应进一步环化得到相应的吲哚并[3,2- c ]香豆素,收率很好。