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Semirotaxanes and unsymmetrical rotaxanes from substituted benzylammonium salts and dibenzo-24-crown-8.
- Source :
-
ARKIVOC: Online Journal of Organic Chemistry . 2021, Vol. 2021, p26-44. 19p. - Publication Year :
- 2021
-
Abstract
- Three new hydroxyl-functionalized secondary benzyl ammonium salts were synthesized and complexed with dibenzo-24-crown-8. Three [2]semirotaxanes and then their two [2]rotaxanes each with two different stoppers were prepared successfully by reactions of the hydroxyl groups with bulky reagents. X-ray analysis of a single crystal of a [2]semirotaxane confirmed its structure. The formation of the [2]semirotaxanes can be reversibly controlled by adding KPF6 and 18-crown-6 sequentially. These new unsymmetrical [2]rotaxanes afford a way to prepare planar chiral rotaxanes and related supramolecular systems. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 15517004
- Volume :
- 2021
- Database :
- Academic Search Index
- Journal :
- ARKIVOC: Online Journal of Organic Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 153860149
- Full Text :
- https://doi.org/10.24820/ark.5550190.p011.456