A simple, rapid, and highly efficient method has been developed for the aza-Michael addition of acrylonitrile to 2-aryl-oxymethylbenzimidazole derivatives in the presence of anhydrous potassium carbonate under microwave irradiation. A series novel of 1-cyanoethyl-2-aryloxymethylbenzimidazole derivatives have been prepared and characterised by 1 H NMR, 13 C NMR, IR spectra and elemental analysis.
The N‐cyanoethylation of substituted benzimidazole derivatives (I) proceeds fast and with high yields under microwave irradiation using K2CO3 as catalyst.
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