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چکیده
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Multicomponent reactions (MCRs) are referred to one-pot, convergent chemical reactions utilizing more than two starting materials, where final product retains significant portions of all starting materials. This advanced approach has emerged as an efficient, economical, and eco-friendly substitute for conventional sequential multi-step synthesis of various biologically active pharmacophores.1 In this study, first biochar was produced from air-dried walnut shells.2 The surface of the nano-substrate was subsequently modified to amine-biochar. After charactisation of this catalyst, a Knoevenagel–Michael cyclocondensation reaction was conducted using aryl aldehydes, malononitrile, and 2,6-diaminopyridine in the presence of amine-functionalized biochar. This reaction was carried out at room temperature, resulting in excellent yields and very short reaction times.
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