3-(3-allyl-1-{8-[3-allyl-4-(2-ethoxycarbonyl-ethyl)-2,5-dioxo-imidazolidin-1-yl]-octyl}-2,5-dioxo-imidazolidin-4-yl)-propionic acid ethyl ester 在
RuCl2(1,3-dimesityl-imidazolidin-2-yl)(PCy3)(=CHPh) 作用下,
以
二氯甲烷 为溶剂,
以54%的产率得到3-[20-(2-ethoxycarbonyl-ethyl)-8,19,21,22-tetraoxo-1,6,9,18-tetraaza-tricyclo[16.2.1.1
6,9]docos-3-en-7-yl]-propionic acid ethyl ester