A new approach to cyclodextrin-based rotaxanes

Rahimah Isnin, Angel E. Kaifer

Research output: Contribution to journalArticle

46 Scopus citations

Abstract

A new synthetic strategy for the preparation of cyclodextrin-based rotaxanes is described. The method is essentially based on the formation of stable inclusion complexes between α-CD and aliphatic chains. The interaction in aqueous media of compounds containing a long alkyl chain terminated in a bulky (ferrocenylmethyl)dimethylammonium group with α-CD leads to inclusion complexes in which the cyclodextrin is threaded by the alkyl chain. Functionalization of the other chain terminus with a carboxylic acid group allows trapping of the chain-threaded CD receptor via amidation reactions of the carboxylic functional group with bulky amines. The rotaxane products are asymmetric since the two terminal groups are different. This feature allows, for the first time, the detection of isomeric rotaxanes exhibiting the two possible orientations of the trapped CD.

Original languageEnglish (US)
Pages (from-to)495-498
Number of pages4
JournalPure and Applied Chemistry
Volume65
Issue number3
DOIs
StatePublished - Jan 1 1993

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ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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