beta-Aryl-beta-amino acids were prepared in good chemical yield and hi
gh enantiomeric purity (> 95% eel via penicillin acylase-catalyzed hyd
rolysis of the corresponding N-phenylacetyl derivatives. The (R)-enant
iomers were the fast-reacting isomers in all cases studied. The biocat
alytic procedure described employs very simple set or reactions using
inexpensive commercially available chemicals and enzyme, and could be
easily scaled up.