Over the last few years nanoparticles (NPs) have been successfully employed as potential replacements of molecular catalysts for a variety of organic reactions. Specially, molecular systems used in homogeneous catalysis are difficult to isolate from the reaction medium and are often used in organic solvents with potentially toxic phosphine ligands. NP catalysts have the advantage of operating as efficiently as molecular catalysts and yet they can be effectively recycled and isolated from the reaction media.Though inorganic oxide supported NPs have been extensively investigated nanobiomaterial-supported NPs for catalysis is a new topic that offers greener reaction conditions. In this paper we will discuss about newly designed rosette nanotubes-supported palladium NPs and their catalytic activity towards Suzuki-Miyaura cross-coupling reactions. Our studies show the utility and scope of RNT/Pd-NP catalysts for a range of different aryl halides and boronic acids under aqueous conditions at ambient temperature. Our catalysts were found to be active at least up to the 10th reaction cycle without any apparent loss of catalytic activity. We have also applied this system to the synthesis of key intermediates of the drug sartans and fungicide Boscalid.

Rosette nanotube-supported palladium nanoparticles as efficient catalysts for Suzuki-Miyaura cross-coupling in water at ambient temperature

243rd National Meeting (2012)

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