The earth-abundant transition metal dichalcogenides (TMDs) have emerged as an effective catalyst to improve the catalytic performance of heterogeneous catalysis, especially in the organic functional group conversion chemistry. The layered...
Herein, we report a simple and straightforward magnetic heterogeneous catalytic (Ni@C) approach to synthesize benzimidazole and quinoxaline scaffolds from ophenylene diamines with primary amines using H 2 O as an environmentally benign solvent. The Ni@C catalyst was synthesized using a pyrolysis method and unambiguously analyzed by various characterization techniques. The scope of the catalytic methodology was presented with various o-phenylene diamines and primary amines producing a range of benzimidazoles and quinoxalines in good to excellent yields. The notable feature include reusability of the Ni@C catalyst (up to five cycles), synthetic applications to functionalize À NH proton of 1H-benzimidazole and the gramscale synthesis which could be a potential industrial application.
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