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Superhydrophobic, chiral, and mesoporous TsDPEN copolymer coordinated to ruthenium species as an efficient catalyst for asymmetric transfer hydrogenation

Paper ID Volume ID Publish Year Pages File Format Full-Text
32090 44899 2013 9 PDF Available
Title
Superhydrophobic, chiral, and mesoporous TsDPEN copolymer coordinated to ruthenium species as an efficient catalyst for asymmetric transfer hydrogenation
Abstract

•Superhydrophobic, chiral, and mesoporous TsDPEN copolymer catalyst was synthesized.•The catalyst exhibits high activities and excellent recyclabilities in ATH reactions.•The catalyst shows better catalytic performance than the homogeneous catalyst.•The enhanced catalyst performance relates to reactant enrichment and product transfer.•The superhydrophobicity is responsible for reactant enrichment and product transfer.

SummaryHomogeneous chiral catalysts usually show higher catalytic activities than corresponding heterogeneous chiral catalysts, because of their easy interaction between catalytically active sites with reactant molecules. We demonstrate here superhydrophobic, chiral, and mesoporous catalysts (TsDPEN-Ru) synthesized from copolymerization of N-p-styrenesulfonyl-1,2-diphenylethylenediamine (V-TsDPEN) with divinylbenzene and loading of Ru species exhibiting much higher activities in asymmetric transfer hydrogenation (ATH) of ketones in aqueous solution than corresponding homogeneous chiral catalyst. This phenomenon is strongly related to the unique features of high enrichment for the reactants in superhydrophobic TsDPEN-Ru catalysts due to their good wettability, as well as easy transfer of product from the catalyst into water phase. These features open a door for design and developing a wide variety of chiral catalysts for asymmetric catalysis.

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Keywords
Superhydrophobicity; Chirality; Mesoporous polymer; TsDPEN ligand; Asymmetric transfer hydrogenation
First Page Preview
Superhydrophobic, chiral, and mesoporous TsDPEN copolymer coordinated to ruthenium species as an efficient catalyst for asymmetric transfer hydrogenation
Publisher
Database: Elsevier - ScienceDirect
Journal: - Volume 8, Issue 4, August 2013, Pages 342–350
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering