In alkaline and acidic media, N-acetylaminocinnamic acid is found to r
educe on metals with a high hydrogen overvoltage, yielding N-acetylphe
nylalanine. The effects of the cathode material, current density, and
temperature on the reduction are studied. The conditions are found und
er which the yield and current efficiency of N-acetylphenylalanine are
89 and 65%, respectively. The procedure developed is applicable for t
he preparative-scale purposes.