[Cl:1][C:2](=[CH2:13])[CH2:3][N:4]([CH2:10][CH:11]=O)[C:5](=[O:9])[O:6][CH2:7][CH3:8].[NH:14]([CH2:16]C(O)=O)[CH3:15]>C1(C)C=CC=CC=1>[Cl:1][C:2]12[CH2:3][N:4]([C:5]([O:6][CH2:7][CH3:8])=[O:9])[CH2:10][CH:11]1[N:14]([CH3:16])[CH2:15][CH2:13]210.3 g (50 mmol) of ethyl N-(2-chloroallyl)-N-(2-oxoethyl)-carbamate are heated under reflux overnight with 4.5 g (50 mmol) of sarcosine in 200 ml of toluene. The mixture is concentrated and the residue is distilled.
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