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A Convenient Synthesis of 4(5)-Alkylacyl-1<i>H</i>-imidazoles from 4(5)-Imidazolecarboxaldehyde
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2003
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Combinatorial ChemistryDiversity Oriented SynthesisEngineeringDiversity-oriented SynthesisOrganic ChemistryAvailable 4Convenient SynthesisN-protecting GroupGood YieldSynthetic ChemistryBiomolecular Engineering
A convenient synthesis of 4(5)-acyl-1H-imidazoles from 4(5)-imidazolecarboxaldehyde without N-protecting group is described. 4(5)-Cyanoimidazole could be synthesized from commercially available 4(5)-imidazolecarboxaldehyde in one-pot. Treatment of 4(5)-cyanoimidazole with various alkylmagnesium bromides followed by addition of aqueous sulfuric acid afforded 4(5)-acyl-1H-imidazoles in good yield.