Multiple threading of a triple-calix[6]arene host
Autor: | Annunziata Soriente, Carmen Talotta, Patrizia Iannece, Margherita De Rosa, Carmine Gaeta, Roberta Ciao, Emanuele Vignola, Veronica Iuliano, Placido Neri |
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Rok vydání: | 2019 |
Předmět: | |
Zdroj: | Beilstein Journal of Organic Chemistry, Vol 15, Iss 1, Pp 2092-2104 (2019) Beilstein Journal of Organic Chemistry |
ISSN: | 1860-5397 |
DOI: | 10.3762/bjoc.15.207 |
Popis: | The synthesis of the triple-calix[6]arene derivative 6 in which three calix[6]arene macrocycles are linked to a central 1,3,5-trimethylbenzene moiety is reported. Derivative 6 is able to give multiple-threading processes in the presence of dialkylammonium axles. The formation of pseudo[2]rotaxane, pseudo[3]rotaxane, and pseudo[4]rotaxane by threading one, two, and three, respectively, calix-wheels of 6 has been studied by 1D and 2D NMR, DOSY, and ESI-FT-ICR MS/MS experiments. The use of a directional alkylbenzylammonium axle led to the stereoselective formation of endo-alkyl pseudo[n]rotaxane stereoisomers. |
Databáze: | OpenAIRE |
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