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. (24th November 2017)

• Record Type: Journal Article
• Authors: Garkoti, Charu; Shabir, Javaid; Gupta, Padmini; Sharma, Manisha; Mozumdar, Subho
• Is Part Of: New journal of chemistry. Volume 41:Number 24(2017)
• Page Start: 15545
• Page End: 15554
• Publication Date: 2017-11-24
• Subjects: Chemistry -- Periodicals; Chimie -- Périodiques; 540
• DOI: 10.1039/c7nj03450d
• Languages: English
• ISSNs: 1144-0546

Abstract

Abstract : Heterogenization of amine functionalized ionic liquid and its application as an efficient and recyclable catalyst. 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.