The<unk>  is series of chemical reactions designed to remove a single amino acid from the carboxylic acid end of a peptide.
The acyl azide of a peptide (1) undergoes a Curtius rearrangement in the presence of benzyl alcohol (2) to give a benzyl carbamate (3).  The Cbz group of intermediate 3 is removed by hydrogenolysis to give an unsubstituteda amide (4) and an aldehyde (5).
Bergmann degradation
Edman degradation
Beta oxidation
Fischer esterification
Arndt-Eistert synthesis
Chiral pool synthesis
Rabi cycle
Glucuronidation