Palladium supported on hollow magnetic mesoporous spheres as recoverable catalyst for one-pot reductive amination of aldehydes with nitroarenes under mild conditions

Zhou, Jinghui; Dong, Zhengping; Wang, Peng; Shi, Zhiqiang; Zhou, Xingchun; Li, Rong

doi:10.1016/j.molcata.2013.10.018

Cited by 29 publications

(17 citation statements)

References 39 publications

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“…Compared with our previous work [24], this work have several advantages as follows: Firstly, the methods of synthesis Catalyst are simple and convenient, these advantages make this methodology attractive for the development of large-scale industrial synthesis. Secondly, we chose water as our reaction solvent, because it was much cheaper, safer and more environmentally friendly than organic solvent.…”

Section: Catalytic Performancementioning

confidence: 99%

Programmed Synthesis Palladium Supported on Fe3O4@C: An Efficient and Heterogeneous Recyclable Catalyst for One-Pot Reductive Amination of Aldehydes with Nitroarenes in Aqueous Reaction Medium

Zhou

Jiao

et al. 2015

Catal Lett

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A highly efficient Pd/Fe 3 O 4 @C catalytic system has been developed for direct reductive amination of carbonyl compounds with nitroarenes in aqueous reaction medium. The catalyst was characterized by TEM, XRD, XPS and VSM. It was found that the catalyst showed a high activity for the one-pot direct reductive amination of aldehydes with nitroarenes in the presence of molecular hydrogen at mild temperature. Besides, the catalyst could be recovered in a facile manner from the reaction mixture and recycled six times without obvious loss in activity. Graphical AbstractKeywords Core-shell Á Pd (0) Á One-pot direct reductive amination Á Aldehydes Á Nitroarenes

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Section: Catalytic Performancementioning

confidence: 99%

Programmed Synthesis Palladium Supported on Fe3O4@C: An Efficient and Heterogeneous Recyclable Catalyst for One-Pot Reductive Amination of Aldehydes with Nitroarenes in Aqueous Reaction Medium

Zhou

Jiao

et al. 2015

Catal Lett

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“…Similar catalytic systems were developed by Li and co-workers for DRA catalyzed by Pd NPs supported on hollow magnetic mesoporous spheres containing Fe 3 O 4 nanoparticles embedded in a mesoporous silica shell (Pd/HMMS-Fe 3 O 4 ) [ 64 ]. The Pd NPs with a mean diameter of 7–8 nm resulted homogeneously dispersed onto the surface of the magnetite coated hollow silica sphere.…”

Section: Metal-catalyzed One-pot Reductive Amination Reactionmentioning

confidence: 99%

Metal-based Heterogeneous Catalysts for One-Pot Synthesis of Secondary Anilines from Nitroarenes and Aldehydes

et al. 2021

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Recently, N-substituted anilines have been the object of increasing research interest in the field of organic chemistry due to their role as key intermediates for the synthesis of important compounds such as polymers, dyes, drugs, agrochemicals and pharmaceutical products. Among the various methods reported in literature for the formation of C–N bonds to access secondary anilines, the one-pot reductive amination of aldehydes with nitroarenes is the most interesting procedure, because it allows to obtain diverse N-substituted aryl amines by simple reduction of nitro compounds followed by condensation with aldehydes and subsequent reduction of the imine intermediates. These kinds of tandem reactions are generally catalyzed by transition metal-based catalysts, mainly potentially reusable metal nanoparticles. The rapid growth in the last years in the field of metal-based heterogeneous catalysts for the one-pot reductive amination of aldehydes with nitroarenes demands for a review on the state of the art with a special emphasis on the different kinds of metals used as catalysts and their recyclability features.

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“…Interestingly,h ollow magnetic mesoporouss ilica nanoparticles (HMMS) were also used as as upport to construct aS iO 2supported Pd catalyst( Pd/HMMS) for at andemr eaction reported by the Li group ( Figure 3). [48] In this work, they post-grafted3 -(2-aminoethylamino) propyltrimethoxysilane onto hollow magnetic mesoporous silica nanoparticles, followed by an anchor,p alladium chloride, and reduction with sodium borohydride, forming stabilized Pd 0 nanoparticles on the surface of the hollow magnetic mesoporouss pheres as aS iO 2 -supported Pd/HMMS catalyst. It was found that this catalystperformed an efficient tandem reduction/amination reaction in the presence of molecular hydrogen in ethanol, affording variouss econdary amines with up to 99 %y ield.…”

Section: Silica-supported Metal and Metalo Xidecatalysts Used For Tanmentioning

confidence: 99%

Silica‐Supported Molecular Catalysts for Tandem Reactions

Jin

Zheng

et al. 2018

ChemCatChem

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The development of silica‐supported molecular catalysts for tandem reactions is an important research direction of heterogeneous catalysis. Besides their significant merits in sustainable catalytic processes, numerous strategies have been utilized to construct silica‐supported molecular catalysts. Here, we emphasize tandem reactions and summarize the recent advances in sequential organic transformations. This paper is composed of four parts. The beginning part introduces silica as supports. The second part provides a large number of examples for the construction of non‐chiral molecular catalysts used for tandem reactions. The third part offers an outline for the construction of chiral molecular catalysts used for enantioselective tandem reactions. Finally, the perspectives for the further development of silica‐supported molecular catalysts for tandem reactions are addressed.

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Palladium supported on hollow magnetic mesoporous spheres as recoverable catalyst for one-pot reductive amination of aldehydes with nitroarenes under mild conditions

Cited by 29 publications

References 39 publications

Programmed Synthesis Palladium Supported on Fe3O4@C: An Efficient and Heterogeneous Recyclable Catalyst for One-Pot Reductive Amination of Aldehydes with Nitroarenes in Aqueous Reaction Medium

Programmed Synthesis Palladium Supported on Fe3O4@C: An Efficient and Heterogeneous Recyclable Catalyst for One-Pot Reductive Amination of Aldehydes with Nitroarenes in Aqueous Reaction Medium

Metal-based Heterogeneous Catalysts for One-Pot Synthesis of Secondary Anilines from Nitroarenes and Aldehydes

Silica‐Supported Molecular Catalysts for Tandem Reactions

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