K. Kumaravel, G. Vasuki
Dec 3, 2009
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Quality indicators
Journal
Green Chemistry
Abstract
A catalyst-free combinatorial library of novel 2-amino-4-(5-hydroxy-3-methyl-1H-pyrazol-4-yl)-4H-chromene-3-carbonitrile derivatives has been developed by a four-component reaction between hydrazine hydrate (1), ethyl acetoacetate (2), 2-hydroxybenzaldehydes (3) and malononitrile (4) in water at ambient temperature.