Abstract
A new and efficient dynamic kinetic resolution (DKR) process of benzylic amines was developed using palladium supported on surface-oxidized multiwalled carbon nanotubes (Pd/oxidized MWCNTs) as racemization catalyst. The catalyst Pd/oxidized MWCNTs was first used in the DKR of amines. Enantiomerically pure benzylic amide was obtained with high conversion and enantiomeric excess (ee) at 55°C. Possible side reactions were strongly suppressed and the catalyst system was used in ten successive reactions without loss of conversion or ee. The likely utility of the method was also reflected by the broad range of possible reaction substrates.
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