Abstract
Reaction of β-aminocrotonamide (I) with α, β-unsaturated ketones is described. Benzylideneacetophenone (IIa) reacts with β-aminocrotonamide (I) to give 2-methyl-4, 6-diphenylpyridine-3-carboxamide (IIIa), 3-acetimidoyl-4, 6-diphenyl-3, 4-dihydro-2 (1H)-pyridone (IV) and 6-carbamoyl-3, 5-diphenyl-2-cyclohexenonimine (V). Similar reaction of β-aminocrotonamide (I) with 3-buten-2-one (IIb) and 4-phenyl-3-buten-2-one (IIc) affords 2, 6-dimethylpyridine-3-carboxamide (IIIb) and 2, 6-dimethyl-4-phenylpyridine-3-carboxamide (IIIc), respectively.
