[C:1]([NH:4][CH:5]([CH:11]([NH:13]CC1C=CC=CC=1)[CH3:12])[C:6]([O:8][CH2:9][CH3:10])=[O:7])(=[O:3])[CH3:2].[H][H]>C(O)C.[Pd]>[C:1]([NH:4][CH:5]([CH:11]([NH2:13])[CH3:12])[C:6]([O:8][CH2:9][CH3:10])=[O:7])(=[O:3])[CH3:2]Five grams of ethyl 2-acetamido-3-benzylaminobutyrate were dispersed in 20 ml of ethanol together with 0.5 of 5% palladium-on-carbon and shaken under 40 psi of hydrogen until hydrogen uptake had ceased. The mixture was filtered through Celite and evaporated to give a 100% yield of ethyl 2-acetamido-3-aminobutyrate.
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