Abstract
In this work, a novel pyridinium-based dicationic organic salt, [H2-BiPyr][ClO4]2, was easily prepared and characterized by FT-IR and NMR spectroscopy. After characterization, it was used as the catalyst in a one-pot multi-component reaction of aromatic aldehydes, ethyl acetoacetate and hydroxylamine hydrochloride under aqueous conditions at reflux temperature leading to the formation of 3-methyl-4-arylmethylene isoxazole-5(4H)-one derivatives. Easy and low-cost preparation of the catalyst, high yields, short reaction times and acceptable reusability of the catalyst are the most important advantages of this method.
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