Studies of Unusual Amino Acids and Their Peptides. XIV. The Asymmetric Hydrogenation of the Phenylhydrazone of MethylN-(3,3-Dimethyl-2-oxobutanoyl)-L-valinate
Studies of Unusual Amino Acids and Their Peptides. XIV. The Asymmetric Hydrogenation of the Phenylhydrazone of Methyl<i>N</i>-(3,3-Dimethyl-2-oxobutanoyl)-L-valinate
The asymmetric hydrogenation of the phenylhydrazone of methyl N-(3,3-dimethyl-2-oxobutanoyl)-l-valinate was investigated using palladium catalysts. The configuration of the newly formed t-leucine moiety was found to be l.