Synthesis and characterization of Ag@Carbon core-shell spheres as a novel catalyst for room temperature N-arylation reaction

[Display omitted] •Synthesis of nontoxic Ag@ Carbon core-shell spheres with excellent morphology by a green, cheap, and easy process.•Utilization of Ag@Carbon core-shell spheres as a novel Ag-catalyst.•An one pot, ligand free CN bond formation in the presence of Ag@Carbon catalyst.•Synthesis of new...

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Published inJournal of catalysis Vol. 361; pp. 339 - 346
Main Authors Seyed-Talebi, Seyedeh Mozhgan, Kazeminezhad, Iraj, Nematpour, Manijeh
Format Journal Article
LanguageEnglish
Published Elsevier Inc 01.05.2018
Subjects
Ag-catalyst
Carbon sphere
Core-shell
Hydrothermal method
N-Arylation
Trichloro-1-nitroprop-1-en-2-amine
Ag-catalyst
N-Arylation
Hydrothermal method
Carbon sphere
Core-shell
Trichloro-1-nitroprop-1-en-2-amine
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Summary:[Display omitted] •Synthesis of nontoxic Ag@ Carbon core-shell spheres with excellent morphology by a green, cheap, and easy process.•Utilization of Ag@Carbon core-shell spheres as a novel Ag-catalyst.•An one pot, ligand free CN bond formation in the presence of Ag@Carbon catalyst.•Synthesis of new trichloro-1-nitroprop-1-en-2-amine compounds with good yield at room temperature. The Ag@Carbon core-shell spheres were synthesized using a green, cheap, and easy process. The products were characterized by XRD, FESEM, TEM, MAP, EDX, Raman, and FT-IR analysis. The synthesis of a novel class of trichloro-1-nitroprop-1-en-2-amine via our Ag@Carbon spheres as a new Ag-catalyzed multicomponent reaction of nitroalkane-trichloroacetonitrile adduct and aryl halides in good yields under mild reaction conditions is reported. The catalytic activity of core-shell spheres was determined by changing the solvent and catalyst. The effect of solvent was investigated by performing the model reaction in the presence of catalyst in various conditions with DMF, DMSO, Toluene, THF, acetone and acetonitrile solvents. Among them, acetonitrile was found to be the best solvent in terms of the reaction time and yield of desired product. A comprehensive catalytic analysis of Ag@Carbon with Ag nanoparticles and carbon spheres as references and commercial AgI, AgBr, AgNO3, and Ag2SO4 as Ag based catalysts has been performed.
ISSN:0021-9517
1090-2694
DOI:10.1016/j.jcat.2018.02.029