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Issue 24, 2017
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Heterogenization of amine-functionalized ionic liquids using graphene oxide as a support material: a highly efficient catalyst for the synthesis of 3-substituted indoles via Yonemitsu-type reaction

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Abstract

In the present study, heterogenization of amine-functionalized ionic liquids was developed via covalent immobilization of 2-chloroethylamine on imidazole modified graphene oxide (GO) sheets. The prepared material was characterized by various physicochemical techniques such as Fourier transform infrared spectroscopy (FT-IR), powder X-ray diffraction (XRD), thermogravimetric analysis (TGA), transmission electron microscopy (TEM), scanning electron microscopy (SEM) and energy-dispersive X-ray (EDX) spectroscopy. The prepared material was employed as an efficient heterogeneous catalyst for the synthesis of 3-substituted indoles via Yonemitsu-type reaction. The catalyst could be easily separated from the reaction mixture through centrifugation and could be reused for seven consecutive cycles without any appreciable loss in its catalytic activity.

Graphical abstract: Heterogenization of amine-functionalized ionic liquids using graphene oxide as a support material: a highly efficient catalyst for the synthesis of 3-substituted indoles via Yonemitsu-type reaction

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Publication details

The article was received on 11 Sep 2017, accepted on 02 Nov 2017 and first published on 07 Nov 2017


Article type: Paper
DOI: 10.1039/C7NJ03450D
Citation: New J. Chem., 2017,41, 15545-15554
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    Heterogenization of amine-functionalized ionic liquids using graphene oxide as a support material: a highly efficient catalyst for the synthesis of 3-substituted indoles via Yonemitsu-type reaction

    C. Garkoti, J. Shabir, P. Gupta, M. Sharma and S. Mozumdar, New J. Chem., 2017, 41, 15545
    DOI: 10.1039/C7NJ03450D

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