Synthesis of pyranopyrazole derivatives by in situ generation of trityl carbocation under mild and neutral media

Synthesis of pyranopyrazole derivatives by in situ generation of trityl carbocation under mild... Keywords Pyranopyrazole  Ph CCl  Tandem  Solvent-free  Neutral media Electronic supplementary material The online version of this article (doi:10.1007/s11164-016-2537-4) contains supplementary material, which is available to authorized users. & Ahmad Reza Moosavi-Zare & Mohammad Ali Zolfigol Sayyed Jamaleddin Asadabadi University, Asadabad 6541835583, I. R. Iran Faculty of Chemistry, Bu-Ali Sina University, Hamadan 6517838683, I. R. Iran 123 7306 A. R. Moosavi-Zare et al. Introduction Multi-component reactions (MCR), are reactions in which three or more starting materials react together to form a target product. In other words, multicomponent reactions are reactions where more than two compounds combine in a sequential manner to obtain highly selective products that remain majority of the atoms of the starting material in the products [1–6]. Pyranopyrazoles are an interesting class of heterocyclic compounds due to their important properties. They have been used as fungicidal [7], bactericidal [8], vasodilatory [9], anticancer [10], pharmaceutical ingredient, and biodegradable agrochemical [11] agents. Also, pyrano[2,3-c]pyrazoles have acted as potential insecticidal [12] and molluscicidal agents [13, 14]. Some catalysts have been used for this transformation, including imidazole [14], per-6-amino-b-cyclodextrin [15], phase transfer catalyst (HDBAC) [16], organocatalyst (MDOs) [17], D,L-Proline [18], hexa decyl tri methyl ammonium bromide Research on Chemical Intermediates Springer Journals

Synthesis of pyranopyrazole derivatives by in situ generation of trityl carbocation under mild and neutral media

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