Applied Catalysis A: General, Vol.506, 254-260, 2015
Asymmetric reactions of chiral organo-magnetic nanoparticles
Magnetic nanoparticles (MNPs) have been widely used as a catalytic supports. MNPs have high surface-area that allows the design and setup of many catalytic sites. Their surfaces can be modified with chiral organocatalyst (COC) to become a sustainable catalytic material. This functionalized magnetite can be easily separated using an external magnet after reaction. We summarize the use of COC-MNPs which are robust and readily available for chiral transformation. The catalytic activity, recyclability, and immobilization method of COC-MNPs are described. The catalytic load, size of the particles, solvent system, ee values and de ratios are also evaluated on each asymmetric reaction. (C) 2015 Elsevier B.V. All rights reserved.
Keywords:Immobilization;Magnetic nanoparticles;Recyclable organocatalysis;Asymmetric reactions;Pseudo-homogeneous system