摘要

Fe3O4- proline MNPs were synthesized without any supplemental linkers, using an eco-friendly and effective procedure. It is readily loaded onto magnetic nanoparticles in a single step and is capable of promoting a range of synthetically useful reactions at ambient conditions. Functionalized chromene derivatives are synthesized via condensation and ring annulations of 2-hydroxynaphthalene- 1,4-dione or 4-hydroxycoumarin, aryl aldehyde and malononitrile in the presence of a catalytic amount of Fe3O4-proline MNPs at room temperature in excellent yields.

  • 出版日期2014