Dicyclohexylcarbodiimide → 1-(4-Ethoxycarbonylbenzoyl)-2-cyanoaziridine

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Reaction Steps

The same compound is obtained when a solution of 1.1 g. dicyclohexylcarbodiimide in 5 ml. diethyl ether is added at 0° C. to a mixture of 0.97 g. p-ethoxycarbonylbenzoic acid and 0.34 g. 2-cyanoaziridine in 15 ml. diethyl ether, stirred for 2 hours at this temperature and then for 1 hour at ambient temperature, the precipitated dicyclohexylurea is filtered off with suction (1.13 g.), the filtrate evaporated and the evaporation residue is triturated with about 3 ml. diethyl ether. The yield is 0.66 g.; m.p. 92°-94° C.

Provenance & Evidence