期刊
SYNTHESIS AND REACTIVITY IN INORGANIC METAL-ORGANIC AND NANO-METAL CHEMISTRY
卷 41, 期 9, 页码 1067-1073出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/15533174.2011.591347
关键词
amino-4H-chromenes; ferric hydrogen sulfate; three-component condensation
Fe(HSO4)(3) efficiently catalyzes the synthesis of 2-amino-4H-chromenes. The reactions proceed through a one-pot, three-component condensation of alpha- or beta-naphthol, aromatic aldehyde derivatives, and malonitrile in the presence of a catalytic amount of ferric hydrogen sulfate. Also, three-component condensation of resorcinol, malononitrile, and various aldehydes using the catalyst gave the corresponding 2-amino-4H-chromenes in good yields. The catalyst displayed high activity and recyclability without loss of its catalytic activity. Additionally, three Zr-based FI catalysts were applied for the one-pot synthesis of chromene derivatives. Although the chemical yield was not high, it is the first report of using such catalysts in the field.
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