Pd-catalyzed arylation by aryl bromides affords pure (Z)-isomers of derivatives of dehydrophenylalanine: Tetrahedron Lett., 24, 4603 (1983). For asymmetric hydrogenation using a chiral Rh catalyst, see: Chem. Lett., 305 (1989). Reacts with pyrazole in the presence of acetic acid or an acetate buffer to give 2-acetamido-3-(N-pyrazolo)propionic acid which, on hydrolysis, gives the pyrazoloalanine, an unusual naturally occurring amino acid: Chem. Pharm. Bull., 70, 609 (1972).