[NH:1]1[CH2:3][CH:2]1[C:4]([NH2:6])=[O:5].Cl[C:8]([O:10][CH3:11])=[O:9]>>[C:4]([CH:2]1[CH2:3][N:1]1[C:8]([O:10][CH3:11])=[O:9])(=[O:5])[NH2:6]In an analogous manner, by reacting 2-aziridine-carboxamide with methyl chloroformate, there is obtained methyl 2-carbamoyl-1-aziridine-carboxylate which, after recrystallization from toluene, melts at 117°-120° C.
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