In homogeneous catalysis, the chemo-, regio- and enantioselectivity of the catalyst is better but the difficulty of catalyst separation from the final product creates economic and environmental barriers. Heterogeneous systems enable better separation but at the cost of reduction in the availability of active sites. The relative advantages of both these systems can now be retained using magnetic nano-catalysts via simple modification of iron ferrites. Because of the reduced size, in nm range, most of the catalyst surface is now available for the reaction. The added advantage is that the catalyst can be separated easily by using an external magnet and reused many times without loss in its activity. These developments including the influence of ligands in these reactions will be highlighted.

Organic synthesis via magnetic attraction: Benign and sustainable protocols using magnetic nanocatalysts

244th National Meeting (2012)

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