Fe3O4@SiO2/EDAC-Pd(0) as a novel and efficient inorganic/organic magnetic composite: Sustainable catalyst for the benzylic C-H bond oxidation and reductive amination under mild conditions

Madhvi Bhardwaj, Harsha Sharma, Satya Paul*, James H. Clark

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

A facile and novel methodology has been reported for the synthesis of Pd(0) nanoparticles onto ethylene diamine functionalized inorganic/organic magnetic composite [Fe3O4@SiO2/EDAC-Pd(0)]. The amine functionalized inorganic/organic substrate proved to be an efficient host for the immobilization of palladium nanoparticles giving a highly stable, water dispersible, active and yet magnetically recoverable heterogeneous catalyst. The synthesized catalyst displayed remarkable activity towards the selective C-H bond oxidation using TBHP and reductive amination of aldehydes with nitroarenes using atom efficient molecular hydrogen in green solvents, and could be reused efficiently upto 6 consecutive runs. The novel catalyst is characterized by FT-IR, TGA, XRD, SEM, HRTEM, EDX, ICP-AES, XPS and VSM techniques. Because of the magnetic nature of the catalyst, it can be retrieved using an external magnet, which eliminates the obligation of catalyst filtration after completion of the reaction, thus making it an eco-friendly and economical catalyst to perform the organic transformations.

Original languageEnglish
Pages (from-to)4952-4961
Number of pages10
JournalNEW JOURNAL OF CHEMISTRY
Volume40
Issue number6
Early online date30 Mar 2016
DOIs
Publication statusE-pub ahead of print - 30 Mar 2016

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