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Updated: May 30, 2026

Heterogeneous Removal of Water-Soluble Ruthenium Olefin Metathesis Catalyst from Aqueous Media Via Host-Guest Interaction
Published on: August 23, 2018
Strong guest binding by cyclodextrin hosts in competing nonpolar solvents and the unique crystalline structure
Toshiyuki Kida1, Takuya Iwamoto, Yoshinori Fujino
1Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka 565-0871, Japan.
Abstract:
6-O-Modified β-cyclodextrins, such as heptakis(6-O-triisopropylsilyl)-β-cyclodextrin (TIPS-β-CD) and heptakis(6-O-tert-butyldimethylsilyl)-β-cyclodextrin (TBDMS-β-CD), formed 2:1 inclusion complexes with pyrene in benzene and cyclohexane with high association constants. The X-ray crystalline structure of the TIPS-β-CD-pyrene complex obtained from the benzene solution showed that one pyrene molecule was incorporated in the form of a sandwich-type complex with two benzene molecules within the cavity of the dimer formed by two TIPS-β-CD molecules.
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