N-{3,5-Bis-[bis-(2,2-dimethyl-[1,3]dioxolan-4-ylmethyl)-carbamoyl]-2,4,6-triiodophenyl}-succinic Acid-Ethyl Ester 、
溴乙酸叔丁酯 在
potassium carbonate 作用下,
以
DMF (N,N-dimethyl-formamide) 为溶剂,
反应 10.0h,
以90.7%的产率得到N-{3,5-Bis-[bis-(2,2-dimethyl-[1,3]dioxolan-4-ylmethyl)-carbamoyl]-2,4,6-triiodophenyl}-N-tert-butoxycarbonylmethyl-succinic Acid-Ethyl Ester