[C:1]([CH:3]1[CH2:5][NH:4]1)#[N:2].[CH2:6]1[O:19][C:18]2[CH:17]=[CH:16][C:10]([C:11]([N:13]=[C:14]=[O:15])=[O:12])=[CH:9][C:8]=2[O:7]1.C1OC2C=CC(C(N)=O)=CC=2O1>C1(C)C=CC=CC=1>[CH2:6]1[O:19][C:18]2[CH:17]=[CH:16][C:10]([C:11]([NH:13][C:14]([N:4]3[CH2:5][CH:3]3[C:1]#[N:2])=[O:15])=[O:12])=[CH:9][C:8]=2[O:7]10.26 g. 2-Cyanoaziridine are dissolved in 5 ml. toluene and introduced, while stirring at 0° C., into a solution of 0.73 g. 3,4-methylenedioxybenzoyl isocyanate in 25 ml. toluene. The reaction mixture is further stirred for 1 hour at 0° C. and the precipitated material (0.65 g.) is filtered off with suction at ambient temperature and briefly boiled with isopropanol, 0.2 g. of the desired 1-(N-3,4-methylenedioxybenzoyl-carbamoyl)-2-cyanoaziridine thereby remaining undissolved (m.p. 145°-153° C., at 172° C. a clear melt is obtained). It is contaminated with a little 3,4-methylenedioxybenzamide.
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