Naphthyl-l-α-amino acids via chemo-enzymatic dynamic kinetic resolution
2012
Abstract A double catalyst system (protease + base) was applied to the dynamic kinetic resolution (DKR) of isomeric 1- and 2-α-naphthyl-glycines and -alanines exploiting the in situ racemization of their thioesters. Due to the different C-acidity of the two sets of compounds, different experimental conditions have been devised to perform the simultaneous resolution/racemization process. In all cases, the racemic N -Boc-thioesters were converted into the aminoacids with an l -configuration almost quantitatively and with complete enantioselectivity.
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