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Keywords
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2-Amino-4H-chromene, Nanocatalyst, Basic ionic liquid anchored to silica, Nano-2-(dimethylamino)-N-(silica-npropyl)-N,N-dimethylethanaminium chloride {nano-[DMSPDE][Cl]}, Multi-component reaction, Solvent-free conditions
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Abstract
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This research describes application of a mesoporous nanostructured material based on basic ionic liquid anchored to silica, i.e. nano-2-(dimethylamino)-N-(silica-n-propyl)-N,N-dimethylethanaminium chloride {nano-[DMSPDE][Cl]}, as a highly effective and heterogeneous nanocatalyst for the production of 2-amino-4H-chromenes. The one-pot multi-component reaction of aromatic aldehydes with malononitrile and 1-naphthol in the presence of nano-[DMSPDE][Cl] under solvent-free conditions affords the title compounds with high yields in short times.
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