科研之友
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摘要
An efficient, one-pot multicomponent procedure for good to excellent yield preparation of 2-amino-4H-chromene-4-carboxylate and 2-amino-5H-pyrano[3,2-c]chromene-4-carboxylate using Fe3O4@SiO2-NH2 nanoparticles as a facile synthesized, easily recoverable, heterogeneous catalyst was investigated. The amine-functionalized silica-supported magnetic catalyst was characterized successfully by Fourier transforms infrared spectroscopy, scanning electron microscopy and energy-dispersive X-ray spectroscopy analyses. Using ethanol as a green solvent in these multicomponent reactions and no significant decrease in catalytic activity of the nanocatalyst during recovering process are other major points in this worthy chromene derivatives synthesis.
- 出版日期2017-5
