Retracted Article: Synthesis of triazolidine-3-one derivatives through the nanocellulose/hydroxyapatite-catalyzed reaction of aldehydes and semicarbazide

Abstract

First use of the nanocellulose/hydroxyapatite heterogeneous catalyst to produce triazolidine-3-one derivatives from aldehydes and semicarbazide.

Facile One‐pot Synthesis of Arylsulfonyl‐4H‐pyrans Catalyzed by Ru Loaded Fluorapatite

“…In organic synthesis, multicomponent reactions (MCRs) have evolved as effective and a potent C−C bond‐making tools to generate pharmaceutically active drug‐discovery development molecules with high purity . MCRs comprise fusion of three or more reactants and deliver the target molecules in an eco‐friendly way, via one‐pot reaction . MCR is a progressive single‐step synthetic process to achieve the value added products from simple and freely existing reactants without segregation of intermediates .…”

Synthesis and characterization of Fe3O4@THAM‐SO3H as a highly reusable nanocatalyst and its application for the synthesis of dihydropyrano[2,3‐c]pyrazole derivatives

“…The use of heterogeneous magnetic nanocatalyst has been widely reported. These nanocatalysts have small size and large external surface areas that allow great accessibility of substrates to the surface‐bound active catalytic sites . Also, their applications are increased due to their superior characteristics such as easily removable from the reaction mixture using an external magnet and reuse for several times without significantly reducing in its catalytic activity …”

Microwave‐Assisted One‐Step Four‐Component Reaction for Synthesis of 1,4‐Dihydropyridines Catalyzed by Triethylamine

“…Multicomponent reactions (MCRs) are considered as important protocols in pharmaceutical and medicinal chemistry fields . MCRs offer potential benefit of formation of multiple chemical bonds in one‐step, and require no separation and purification of reaction intermediates .…”

“…Multicomponent reactions (MCRs) are considered as important protocols in pharmaceutical and medicinal chemistry fields . MCRs offer potential benefit of formation of multiple chemical bonds in one‐step, and require no separation and purification of reaction intermediates . The crucial role of Hanzsch Arthur, who pioneered the development of dihydropyridines and many pyridine derivatives for the transformation of bioactive molecules, more than hundreds of year ago, is acknowledged and well‐documented .…”