Abstract
An one-pot-reaction methodology was developed to synthesize a variety of polysubstituted 3-aryl-2-arylmethylene amino-4-hydroxybenzofurans from substituted β-nitrostyrenes, aromatic aldehydes, ammonium acetate, and cyclohexane-1,3-diones for the generation of a wide range of structurally interesting and pharmacologically significant compounds. The reaction pathway involves Michael addition of substituted nitrostyrenes and cyclohexane-1,3-diones, then nucleophilic addition of 2-(2-nitro-1-phenylethyl)cyclohexane-1,3-dione and Schiff base generated from aromatic aldehyde and ammonium acetate and intramolecular cyclization, followed by dehydroaromatization to afford the corresponding 3-aryl-2-arylmethyleneamino-4-hydroxybenzofurans.
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