عنوان المقالة: Efficient preparation of acidic ionic liquidfunctionalized reduced graphene oxide and its catalytic performance in synthesis of benzimidazole derivatives
H. D. Hanoon • E. Kowsari • M. Abdouss • H. Zandi • M. H. Ghasemi
Abstract
This article reports an efficient method with a simple workup for the
facile synthesis of benzimidazole derivatives using an acidic ionic liquid covalently
supported on graphene sheets. The catalyst was efficiently synthesized and characterized
using FTIR, scanning electron microscopy, X-ray photoelectron spectroscopy,
energy-dispersive X-ray spectroscopy and X-ray diffraction techniques.
The catalytic organic reaction was performed in different conditions. Among the
various catalysts, A-FGO is an excellent catalyst in the reaction. A wide variety of
aldehydes were used under optimal reaction conditions to synthesis benzimidazole
derivatives. The reaction conditions are mild and the workup method is simple as
well as giving high yields. All synthesised products were characterised using
melting point, FTIR, 1H NMR, 13C NMR and CHN techniques. At the end of the
reaction, the catalyst was recovered by a simple filtration, washed with dichloromethane,
dried and then reused in successive reactions. Products were obtained at
the same purity as in the initial runs. Shorter reaction times, high yields, safer
reaction condition, the eco-friendly nature and possible reuse of the catalyst make
these methods an efficient contribution to the current processes within the field of
benzimidazole derivatives synthesis.
هيثم دلول حنون | Haitham Dalol Hanoon | 6697