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An efficient and simple synthesis of some 2-amino-3-cyano-4H-pyran derivatives was developed by the one-pot and three-component reaction of aldehydes, ethyl acetoacetate, and malononitrile in the presence of ammonia as catalyst at room temperature. The reaction is rapid and clean, and gives the products in high yields.

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The title compounds are prepared by multicomponent reaction of ethyl acetoacetate, various aryl aldehydes, malononitrile, and hydrazine hydrate using chinoline chloride/urea as a dual catalyst and solvent.