期刊
CHEMICAL SCIENCE
卷 3, 期 11, 页码 3265-3271出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c2sc20986a
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资金
- Natural Sciences and Engineering Research Council (NSERC) of Canada
- International Center for Diffraction Data
Condensation of an aldehyde appended benzimidazolium cation with a 1,2-benzenediamine in the presence of a crown ether allows formation of a second benzimidazole group and the facile synthesis of a [2]rotaxane molecular shuttle. The ease of this reaction and the versatility of the initial templating interaction between the benzimidazolium cation and crown ether allows for the preparation of [2] rotaxane molecular shuttles with crown ether macrocycles of various shapes and sizes. The synthesis and dynamic properties of a set of five [2]rotaxane molecular shuttles are described including the first examples of rotaxanes containing the larger macrocycles dibenzo[30]crown-10 (DB30C10) and bis-meta-phenylene-[26]crown-8 (BMP26C8).
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