Volume 57, Issue 48 pp. 15827-15831
Communication

Diversity-Oriented Construction and Interconversion of Multicavity Supermacrocycles for Cooperative Anion–π Binding

Jian Luo

Jian Luo

Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190 China

University of Chinese Academy of Sciences, China

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Dr. Yu-Fei Ao

Dr. Yu-Fei Ao

Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190 China

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Prof. Dr. Qi-Qiang Wang

Corresponding Author

Prof. Dr. Qi-Qiang Wang

Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190 China

University of Chinese Academy of Sciences, China

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Prof. Dr. De-Xian Wang

Corresponding Author

Prof. Dr. De-Xian Wang

Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190 China

University of Chinese Academy of Sciences, China

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First published: 08 October 2018
Citations: 30

Graphical Abstract

A one-pot strategy for the diversity-oriented construction of multicavity-containing supermacrocycles and their interconversion has been developed. With large cavities and multiple electron-deficient triazines, these supermacrocycles can accommodate large organic anions through unprecedented multiple anion–π interactions.

Abstract

A one-pot strategy for the diverse construction of a series of supermacrocycles was realized using rationally designed macrocyclic precursors. The base was found to have a significant effect not only on the size distribution but also on the structure of the supermacrocycles formed. While the use of less CsF (<4.0 equiv) afforded regular supermacrocycles containing up to four macrocyclic precursor subunits, the use of more CsF (>8.0 equiv) resulted in structurally reorganized supermacrocyles featuring oxacalix[2]arene[2]triazine motifs. Base-mediated supermacrocycle-to-supermacrocycle transformations were also revealed. With large cavities and many electron-deficient triazine moieties, the supermacrocyles can accommodate large organic anions via multiple anion–π interactions as demonstrated for two supermacrocycles, which can host 2-carboxyacetate and represent the first crystallographic examples of sandwich-like structures with anion–π interactions.

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