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Updated: Feb 11, 2026

Heterogeneous Removal of Water-Soluble Ruthenium Olefin Metathesis Catalyst from Aqueous Media Via Host-Guest Interaction
Published on: August 23, 2018
Host-Guest Chemistry Aids and Abets a Stereospecific Photodimerization in the Solid State
Dafni G Amirsakis1, Miguel A Garcia-Garibay1, Stuart J Rowan1
1Department of Chemistry and Biochemistry University of California, Los Angeles 405 Hilgard Avenue, Los Angeles, CA 90095-1569, USA, Fax: (+1) 310-206-1843.
Abstract:
A bis(dialkylammonium ion)-substituted stilbene derivative cocrystallizes with bisparaphenylene[34]crown-10 to form, in the solid state, a 2:2 host-guest complex wherein the stilbene double bonds are aligned with a relative geometry suitable for a stereospecific photochemical [2+2] cycloaddition. When irradiated with white light, this crystalline complex forms a single diastereoisomer of the corresponding cyclobutane derivative, the stereochemistry of which has been determined unambiguously in the solid state by X-ray crystallography to be syn-anti-syn.
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