Abstract
The trans-PtH2(P(OMe)3)2 complex was synthesized and tested as a nitrile hydration catalyst. Under nitrile hydration reaction conditions, the complex degrades to Pt nanoparticles, which are catalytically active for nitrile hydration. TEM analysis shows that the Pt nanoparticles are approximately 2 nm in diameter. 31P NMR and XPS studies of the nanoparticles show that the stabilizing ligand on the surface of the nanoparticles is either P(OMe)3 or OP(OMe)3. The Pt nanoparticles are catalytically active for the hydration of cyanohydrins, a class of nitriles that are difficult to hydrate because homogeneous catalysts are susceptible to cyanide poisoning. The Pt nanoparticles are inhibited slightly by large excesses of cyanide but still remain catalytically active. Glycolonitrile and lactonitrile were quantitatively converted to their respective amides, and acetone cyanohydrin was converted to α-hydroxyisobutyronitrile in 30 % yield.
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Rohm and Hass Chemical Company and the NSF (CHE-0719171) are acknowledged for the support of this research.
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Downs, E.L., Tyler, D.R. Nitrile and Cyanohydrin Hydration with Nanoparticles Formed In Situ from a Platinum Dihydride Complex. J Inorg Organomet Polym 25, 73–80 (2015). https://doi.org/10.1007/s10904-014-0079-z
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DOI: https://doi.org/10.1007/s10904-014-0079-z