[CH2:1]([N:4]=[C:5]=[N:6][CH2:7][CH:8]=[CH2:9])[CH:2]=[CH2:3].[N:10]#[C:11][NH2:12]>ClCCCl>[CH2:1]([NH:4][C:5]([NH:6][CH2:7][CH:8]=[CH2:9])=[N:12][C:11]#[N:10])[CH:2]=[CH2:3]A solution of 0.7 g N,N'-bis(allyl)carbodiimide in 10 ml of 1,2-dichloroethane is reacted with 0.27 g of cyanamide and the reaction mixture is worked up as described in Example 4. Recrystallisation from diethyl ether yields a crystalline product which melts at 66.5°-67.0° C.
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