allyl 3-(1-{8-[4-(2-allyloxycarbonylethyl)-3-(4-chlorobenzyl)-2,5-dioxoimidazolin-1-yl]octyl}-3-(4-chlorobenzyl)-2,5-dioxoimidazolin-4-yl)propionate 在
RuCl2(1,3-dimesityl-imidazolidin-2-yl)(PCy3)(=CHPh) 作用下,
以
苯 为溶剂,
以99%的产率得到12,27-bis(4-chlorobenzyl)-17,22-dioxa-1,10,12,27-tetraazatricyclo[24.2.1.1
10,13]triacont-19-ene-11,16,23,28,29,30-hexaone