基于杯[4]芳烃的四重[2]轮烷。

Fourfold [2]rotaxanes based on calix[4]arenes.

作者信息

Gaeta Carmine, Vysotsky Myroslav O, Bogdan Anca, Böhmer Volker

机构信息

Abteilung Lehramt Chemie, Fachbereich Chemie, Pharmazie und Geowissenschaften, Johannes Gutenberg-Universität, 55099 Mainz, Germany.

出版信息

J Am Chem Soc. 2005 Sep 28;127(38):13136-7. doi: 10.1021/ja054184z.

DOI:10.1021/ja054184z

PMID:16173728

Abstract

Tetraurea calix[4]arenes with four loops form exclusively heterodimers with open-chain urea calix[4]arenes when they are dissolved in aprotic solvents. These assemblies can be considered as pseudorotaxanes. If open-chain tetraureas ending with maleic imide functions are used, their Diels-Alder reaction with 1,4,5,8-tetrapentoxyanthracene leads to tetra[2]rotaxanes which cannot be split into the single calixarene parts by hydrogen bond breaking solvents.

摘要

具有四个环的四脲杯[4]芳烃在非质子溶剂中溶解时，仅与开链脲杯[4]芳烃形成异二聚体。这些组装体可被视为准轮烷。如果使用以马来酰亚胺官能团结尾的开链四脲，它们与1,4,5,8-四戊氧基蒽的狄尔斯-阿尔德反应会生成四[2]轮烷，而这种四[2]轮烷不能通过氢键断裂溶剂分解为单个杯芳烃部分。