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A Highly Active Magnetically Recoverable Nano Ferrite-Glutathione-Copper (Nano-FGT-Cu) Catalyst for Huisgen 1, 3-Dipolar Cycloadditions
Citation:
Baig, R. AND R. S. VARMA. A Highly Active Magnetically Recoverable Nano Ferrite-Glutathione-Copper (Nano-FGT-Cu) Catalyst for Huisgen 1, 3-Dipolar Cycloadditions. GREEN CHEMISTRY. Royal Society of Chemistry, Cambridge, Uk, 14:625 - 632, (2012).
Impact/Purpose:
To inform the public.
Description:
A homogeneous catalyst, where the catalyst is in the same phase as the reactants, is generally accepted by chemists.1 One attractive property is that all catalytic sites are accessible because the catalyst is generally a soluble metal complex where it is possible to tune the chemo-, regio- and enantioselectivity of the catalyst. Homogeneous catalysts have a number of other advantages such as high selectivity, better yield, and easy optimization of catalytic systems by modification of ligand and metals. They are used in a number of commercial applications, but the difficulty of catalyst separation from the final product creates economic and environmental barriers to broadening their scope thus restricting their wide use in a number of applications. Removal of trace amounts of catalyst from the end product is essential since metal contamination is highly regulated, especially by the pharmaceutical industry. Even with the extensive and careful use of various techniques such as distillation, chromatography, or extraction, removal of trace amounts of catalyst remains a challenge.
