The synthesis of calix[4]arenes substituted at their wide rim by three 3-aryl-urea and one acetamide group and at their narrow rim by three alkyl ether groups and one ether group ending in a carboxy function is described. The reaction sequence ensures that these functional groups are attached to the same phenolic unit. Two key intermediates have been additionally characterized by X-ray crystal structure analysis.
描述了杯[4]芳烃的合成,其宽边缘被三个3-芳基-脲和一个乙酰胺基团取代,而其窄边缘被三个烷基醚基团和一个以羧基官能团结尾的醚基团取代。反应顺序确保这些官能团连接到相同的酚单元。两种关键中间体还通过 X 射线晶体结构分析进行了表征。