Copper(I)‐catalyzed multicomponent reactions in sustainable media |
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Authors: | Robert Paw?owski Ewelina Zaorska Sebastian Staszko Anna Szadkowska |
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Institution: | 1. Biological and Chemical Research Centre, Department of Chemistry, University of Warsaw, Warszawa, Poland;2. Faculty of Chemistry, Warsaw University of Technology, Warsaw, Poland |
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Abstract: | Multicomponent reactions including Biginelli reaction and A3 coupling are useful synthetic methodologies as they can provide valuable intermediates and building blocks for the synthesis of bioactive natural compounds. The heterocyclic products of these transformations represent antibacterial, antitumor or anti‐inflammatory properties. In presented study, copper‐mediated protocols for Biginelli reaction and A3 coupling in sustainable solvents were reported. At first, charged NHC copper complexes were synthesized in few steps and characterized using spectroscopic methods followed by preliminary activity tests in sustainable media. Later in this study, Biginelli reaction and A3 coupling were proceeded using prepared copper catalytic systems under mild conditions. Desired nitrogen‐bearing products were obtained with moderate to very high yields. Some attempts to recycle one of the received NHC copper initiators were also investigated. |
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Keywords: | A3 coupling reaction Biginelli reaction copper catalysis green solvents NHC ligands |
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