Other amino acids have been resolved by crystallization of their complexes with L-phenylalanine, and decomplexation with activated carbon: Chem. Lett., 113 (1984). Formation of the N,N-dibenzyl benzyl ester by reaction with benzyl bromide and base, followed by LAH reduction and Swern oxidation, lead to the N,N-dibenzyl (S)-ɑ-amino aldehyde, a useful chiral intermediate: Org. Synth., 76, 110 (1998).