二碳酸二叔丁酯 、
4-amino-1,7-bis{N-[1-(4,4-dimethyl-2,6-dioxocyclohexylidene)ethyl]amino}-4-{3-N-[1-(4,4-dimethyl-2,6-dioxocyclohexylidene)ethyl]amino}propylheptane 在
4-二甲氨基吡啶 作用下,
以
二氯甲烷 为溶剂,
反应 1.0h,
以69%的产率得到4-isocyanato-1,7-bis{N-[1-(4,4-dimethyl-2,6-dioxocyclohexylidene)ethyl]amino}-4-{3-N-[1-(4,4-dimethyl-2,6-dioxocyclohexylidene)ethyl]amino}propylheptane