4-(11,13-dioxo-1,4,7,10-tetraaza-cyclotridec-12-yl)-butyronitrile 、
N,N'-二(2-氨乙基)-1,3-丙二胺 以Thus, 3-(3-cyanopropyl)-2,4-dioxo-1,5,8,12-tetraaza-cyclotetradecane (C-substituted cyclic diamide) was obtained in a yield of 30%的产率得到4-(5,7-dioxo-1,4,8,11-tetraaza-cyclotetradec-6-yl)-butyronitrile