MCM-41@Schiff base-Co(OAc)2 as an efficient catalyst for the synthesis of pyran derivatives

Pan, Shiwei; Li, Puhui; Xu, Guihua; Guo, Jingchang; Ke, Libin; Xie, Canquan; Zhang, Zhoucai; Hui, Yonghai

doi:10.1007/s11164-019-04038-1

Cited by 15 publications

(2 citation statements)

References 41 publications

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“…Pan et al [131] synthesized chromene derivatives via aqueous phase, three-component, one-pot reaction of malononitrile, 2naphthol(or cyclohexane-1,3-dione) and aldehydes, in the presence of MCM-41@Schiff base-Co(AcO) 2 as hybrid catalyst (Figure 67). Co(AcO) 2 is probably required for stabilization of the ligand and also as Lewis acid in the reaction.…”

Section: Multicomponent Reactionsmentioning

confidence: 99%

Functionalized MCM‐41: Versatile Catalysts for Organic Transformations

et al. 2022

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Functionalized MCM-41 constitute a group of potent hybrid catalysts for organic reactions. Their pore size is large enough to house large substrate molecules, the large bulk of surface silanol groups helps in introduction of a variety of functionalities required for the catalytic action. The current review emphasizes the broad methodology for the synthesis of these catalysts, effect of functionalization on reaction parameters, stability, efficiency, selectivity, reusability along with limitations of these catalysts to organic transformations, from a green chemistry standpoint. Some selected mechanisms of catalytic action are also highlighted. The review demonstrates that surface functionalized MCM-41 constitute innovative and need based catalyst systems that catalyze reactions like Sonogashira, Suzuki, Heck, Friedel Craft reaction, Aldol and Knoevenagel condensation etc. Several other reactions like oxidation, reduction, dehydration, esterification, epoxidation, CÀ S, CÀ N, CÀ O and SÀ S coupling as well as multicomponent synthesis of bioactive heterocycles have also been reported. It is hoped that this review will improve the understanding of scientific community on how these versatile catalysts operate and will provide opportunities to further enhance their utility for chemical industry.

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Section: Multicomponent Reactionsmentioning

confidence: 99%

Functionalized MCM‐41: Versatile Catalysts for Organic Transformations

et al. 2022

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“…Hence, many efforts have been made to synthesize such high-yield compounds. There are various methods for the synthesis of these compounds using different catalysts such as MCM-41@Schiff base-Co (OAC) 2 23 , Yb (NPf 2 ) 3 24 , MCM-41@serine@Cu(II) 25 , titanium silicon oxide nanopowder 26 , Y(NO 3 ) 3 .6H 2 O 27 , etc. despite their numerous advantages, they have some limitations such as long reaction time, expensive reagents, and the possibility of their contamination in final products.…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of graphitic carbon nitride-supported l-arginine as a highly efficient and recyclable catalyst for the one-pot synthesis of condensation reactions

Ghafuri

Tajik

Ghanbari

et al. 2021

Sci Rep

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In this work, graphitic carbon nitride-supported l-arginine (g-C3N4@l-arginine) nanocatalyst was synthesized and evaluated using FT-IR, EDX, XRD, TGA, and FESEM analyses. The performance of the prepared nanocatalyst was examined in the synthesis of 1,4-dihydropyridine, 4H-chromene, and 2,3-dihydro quinazoline derivatives. The novel g-C3N4@l-arginine nanocatalyst showed high thermal stability, easy separation from reaction media, the capability to be used in various multicomponent reactions, and acceptable reusability.

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MCM‐41 Supported Anthracene Based Cu(II)‐Schiff Base Complex: A Heterogeneous Catalyst for the Synthesis of 4H‐Pyrans/Chromene

Singh,

Malik,

Singh

et al. 2024

ChemistrySelect

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The anthracene‐appended Schiff base N1‐(anthracene‐9‐methylene)benzene‐1,2‐diamine and its Cu(II) complex has been synthesized and anchored on MCM‐41 support (MCM@CP@AnL@Cu 1). The synthesized catalyst was characterized by various analytical techniques including single crystal X‐ray. Malononitrile, 1,3‐dione, and aromatic aldehydes with various substituents were used in one‐pot, three‐component synthesis of 2‐amino‐3‐cyano‐4H‐pyran/chromene derivatives using above catalyst 1. All the products of the catalytic reaction were characterized by 1H and 13C NMR spectra. We have also proposed a probable reaction mechanism involved in the catalytic reaction. The present catalyst has several advantages like works in mild reaction conditions, that is, at 80 °C, gives higher yields up to 97%, has thermal stability up to 295 °C, and can be reused up to 5 cycles. The immobilized material did not show any considerable leaching or deterioration throughout the catalytic reactions, confirming that it possesses a practical benefit over homogeneous catalysis. The MCM@CP@AnL@Cu (1) is believed to be a good solid heterogeneous catalyst and meets the need of green chemistry for sustainable environment. To the best of our knowledge, this is first example of anthracene‐based Cu (II)‐Schiff base complexes immobilized on modified MCM‐41 surfaces for the multicomponent synthesis of 4H‐pyrans.

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MCM-41@Schiff base-Co(OAc)2 as an efficient catalyst for the synthesis of pyran derivatives

Cited by 15 publications

References 41 publications

Functionalized MCM‐41: Versatile Catalysts for Organic Transformations

Functionalized MCM‐41: Versatile Catalysts for Organic Transformations

Preparation and characterization of graphitic carbon nitride-supported l-arginine as a highly efficient and recyclable catalyst for the one-pot synthesis of condensation reactions

MCM‐41 Supported Anthracene Based Cu(II)‐Schiff Base Complex: A Heterogeneous Catalyst for the Synthesis of 4H‐Pyrans/Chromene

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