Abstract
Silica-bonded 2-hydroxyethylammonium acetate was synthesized easily by the reaction of 3-chloropropylsilica with ethanolamine followed by ion exchange with acetate. It was used as a heterogeneous, re-usable, efficient and easy to handle catalyst for the one-pot synthesis of a variety of 2-Amino-4H-chromen-4-yl phosphonates and β-phosphonomalonates at room temperature under solvent-free conditions.
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We are thankful to University of Birjand Research Council for their support on this work.
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Sobhani, S., Honarmand, M. Silica-Bonded 2-Hydroxyethylammonium Acetate as an Efficient and Recyclable Catalyst for the Synthesis of 2-Amino-4H-chromen-4-yl Phosphonates and β-Phosphonomalonates. Catal Lett 143, 476–485 (2013). https://doi.org/10.1007/s10562-013-0968-8
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DOI: https://doi.org/10.1007/s10562-013-0968-8