https://www.thevespiary.org/rhodium/Rhodium/chemistry/amph.phenylalanine.html (https://www.thevespiary.org/rhodium/Rhodium/chemistry/amph.phenylalanine.html)
The error isn't in the chemistry, but in the diagram. Nothing serious, but the compound synthesized is N-benzyloxycarbonyl protected. The diagram shows N-Boc protection, which is tert-butyloxycarbonyl. The correct representation for benzyloxycarbonyl is Cbz.
-SpicyBrown