Ni–Al2O3 as reusable heterogeneous catalyst for expedient one-pot synthesis of naphthopyrans

Ni–Al2O3 as reusable heterogeneous catalyst for expedient one-pot synthesis of naphthopyrans Electronic supplementary material The online version of this article (doi:10.1007/s11164-016-2500-4) contains supplementary material, which is available to authorized users. & Dibakar Chandra Deka & Hormi Mecadon Department of Chemistry, University of Gauhati, G. B. Nagar, Guwahati, Assam 781014, India 123 6864 S. J. Kalita et al. Keywords Ni–Al O  Chromenes  One-pot  Three-component reaction 2 3 Introduction Heterogeneous catalysis has become a focal point of synthetic interests because of the profound advantages of straightforward recovery and reuse of the catalyst from the reaction mixture by simple filtration or decantation and recently by magnetic altercations [1–3]. Greater significance is when such process is carried out in multi- component reaction strategy (MCR) and also in aqueous medium which can overcome the adverse environmental impacts of employing organic solvents. Because, while the MCR strategy offers flexibility, convergence and atom efficiency [4–6], the abundance, non-toxicity, and the unique properties of water [7–9] can make the overall procedure ideal. Such strategic combination is a highly desirable synthetic approach to develop powerful green chemistry technology procedures. Ni–Al O , which is relatively new and cost-effective supported catalyst, has been 2 3 found to be very promising in terms of catalytic activity, Research on Chemical Intermediates Springer Journals

Ni–Al2O3 as reusable heterogeneous catalyst for expedient one-pot synthesis of naphthopyrans

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Springer Netherlands
Copyright © 2016 by Springer Science+Business Media Dordrecht
Chemistry; Catalysis; Physical Chemistry; Inorganic Chemistry
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