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Asymmetric Ring Opening Reaction of Catalyst Immobilized on Silica Monolith with Bimodal Meso/Macroscopic Pore Structure

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Abstract

A route to synthesize porous materials with a bimodal macro/mesoscopic pore system has been investigated in this work. Large and molded meso/macroporous silica monoliths could be obtained by using monodispersed polymethylmethacrylate (PMMA) beads and Pluronic F-127/SBA-16 sol solutions. Phenolic ring-opening of epoxides was performed successfully by using chiral (salen)Co-BF3 complexes immobilized catalysts. Very high enantioselectivity up to 99% ee and conversion were obtained in phenolic kinetic resolution (PKR) reaction by immobilized catalysts.

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Acknowledgments

This research was supported by KJBSC (Korea-Japan Basic Scientific Cooperation) program through the Korea Science and Engineering Foundation funded by the Ministry of Education, Science and Technology (F01-2007-000-10175-0).

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Correspondence to Geon-Joong Kim.

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Kim, YS., Guo, Xf. & Kim, GJ. Asymmetric Ring Opening Reaction of Catalyst Immobilized on Silica Monolith with Bimodal Meso/Macroscopic Pore Structure. Top Catal 52, 197–204 (2009). https://doi.org/10.1007/s11244-008-9140-x

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