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Updated: May 7, 2026

Development of Heterogeneous Enantioselective Catalysts using Chiral Metal-Organic Frameworks MOFs
Published on: January 17, 2020
Selective retention of methanol over ethanol by a cyclen-based cryptand/copper(II) complex
Yoichi Habata1, Mari Ikeda, Ajay K Sah
1Department of Chemistry, Faculty of Science, and ‡Research Center for Materials with Integrated Properties, Toho University , 2-2-1 Miyama, Funabashi, Chiba 274-8510, Japan.
Abstract:
A cyclen-based cryptand (2) was prepared in a two-step synthesis from dioxocyclen. When a Cu(CF3SO3)2 complex with 2 was prepared in methanol, the 2/Cu(CF3SO3)2 complex incorporated one methanol in the cavity formed by the diethyleneoxy unit and the NH group of the cyclen. When prepared in ethanol, the 2/Cu(CF3SO3)2 complex similarly incorporated one ethanol. Cold electrospray ionization mass spectrometry (CSI-MS) of the 2/Cu(CF3SO3)2/alcohol complexes selectively retains methanol over ethanol under CSI-MS conditions.
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