[C:1]1([CH:7]=[CH:8][C:9]([NH:11][NH:12][C:13]([O:15][CH3:16])=[O:14])=[O:10])[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1>[Pd].CO>[C:1]1([CH2:7][CH2:8][C:9]([NH:11][NH:12][C:13]([O:15][CH3:16])=[O:14])=[O:10])[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=122.0 g. (0.1 mole) of methyl 3-(β-phenylacryloyl)-carbazate are dissolved in 300 ml. of methanol and the solution is hydrogenated in the presence of 0.2 g. of a palladium-charcoal catalyst. The solution is evaporated. Thus 21.8 g. of the white crystalline desired compound are obtained. Yield: 98.2%. M.p.: 118° C.
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