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Nanomagnetically modified ferric hydrogen sulfate (NiFe2O4@SiO2-FHS): a reusable green catalyst for the synthesis of highly functionalized piperidine derivatives

TLDR
An efficient and one-pot multi-component procedure for the preparation of functionalized piperidine derivatives from reactions of aromatic aldehydes, substituted anilines and ethyl acetoacetate in the presence of ferric hydrogen sulfate-supported silica-coated magnetic nanoparticles (NiFe2O4@SiO2-FHS) as a magnetically recyclable green catalyst has been developed as mentioned in this paper.
Abstract
An efficient and one-pot multi-component procedure for the preparation of functionalized piperidine derivatives from reactions of aromatic aldehydes, substituted anilines and ethyl acetoacetate in the presence of ferric hydrogen sulfate-supported silica-coated magnetic nanoparticles (NiFe2O4@SiO2-FHS) as a magnetically recyclable green catalyst has been developed. The catalysts show environmentally benign character, which can be easily prepared, stored, and recovered several times without obvious significant loss of activity.

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Synthesis of Highly Functionalized Piperidines Using Polyphosphoric Acid Supported on Silica-coated Magnetic Nanoparticles

TL;DR: The application of magnetic nano particles in the field of catalysis has become a useful area of research as mentioned in this paper and functionalized magnetic nanoparticles (MNPs) have been employed in organic synthesis.
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Design, preparation and characterization of a new ionic liquid, 1,3-disulfonic acid benzimidazolium chloride, as an efficient and recyclable catalyst for the synthesis of tetrahydropyridine under solvent-free conditions

TL;DR: In this article, 1,3-disulfonic acid benzimidazolium chloride is synthesized, and characterized by studying its FT-IR, 1H NMR, 13C NMR as well as mass spectra.
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1,3-Disulfonic acid benzimidazolium chloride as an efficient and recyclable ionic liquid catalyst for the synthesis of 3,4-dihydropyrimidine-2-(1H)-ones/thiones

TL;DR: In this paper, 1,3-disulfonic acid benzimidazolium chloride ionic liquid (Dsbim]Cl) was used for the synthesis of 3,4-dihydropyrimidine-2-(1H)-ones/thiones through the one-pot three-component condensation of aromatic aldehydes, urea/thiourea and ethyl acetoacetate under solvent-free conditions.
Journal ArticleDOI

TiCl2·2H2O catalyzed one-pot synthesis of highly functionalized tetrahydropiperidines and evaluation of their antimicrobial activities

TL;DR: In this article, one-pot condensation reaction of ethyl acetoacetate, various substituted benzaldehydes and anilines in the presence of TiCl2·2H2O yields highly functionalized tetrahydropiperidines.
References
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Nanoparticles as Recyclable Catalysts: The Frontier between Homogeneous and Heterogeneous Catalysis

TL;DR: The Review presents the recent developments and the use of NP catalysis in organic synthesis, for example, in hydrogenation and C--C coupling reactions, and the heterogeneous oxidation of CO on gold NPs.
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Magnetically recoverable nanocatalysts.

TL;DR: This Review concludes with a conclusion that further research is needed into the determinants of infectious disease and the immune system in order to treat these diseases and provide effective treatments.
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Magnetically Recoverable Chiral Catalysts Immobilized on Magnetite Nanoparticles for Asymmetric Hydrogenation of Aromatic Ketones

TL;DR: Orthogonal nature of the present catalyst immobilization approach should allow the design of other superparamagnetic nanoparticle-supported asymmetric catalysts for a wide range of organic transformations.
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Organocatalyzed highly atom economic one pot synthesis of tetrahydropyridines as antimalarials.

TL;DR: A highly atom economic one pot synthesis of tetrahydropyridines was achieved by L-proline/TFA catalysed multicomponent reaction of beta-keto-esters, aromatic aldehydes and anilines.
Journal ArticleDOI

Synthesis and structure-activity relationships of potential anticonvulsants based on 2-piperidinecarboxylic acid and related pharmacophores.

TL;DR: The 2,6-dimethylanilides were the most potent compounds in the MES test in each group of compounds evaluated, and compounds 50 and 75 should be useful leads in the development of agents for the treatment of tonic-clonic and partial seizures in man.
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