121st General Meeting of the KCS

Type Poster Presentation
Area Organic Chemistry
Room No. Event Hall
Time 4월 19일 (목요일) 11:00~12:30
Code ORGN.P-513
Subject Amino-Polystyrene Supported Hexaethylene Glycol-Bridged Ionic Liquid as an Efficient Heterogeneous Catalyst for Water-Mediated Nucleophilic Hydroxylation
Authors Haebin Kim, Dong Wook Kim*, Suhong Park, Yerin Kim
Department of Chemistry, Inha University, Korea
Abstract We report here a simple and eco-friendly protocol for the construction of an amino-polystyrene supported hexaethylene glycol-bridged ionic liquid (APS-HEGBIL) via copolymerization of 1-vinyl imidazolium ionic liquid bearing hexaethylene glycol moieties with amino-styrene, along with its characterization by several analytical and spectroscopic techniques. The resulting APS-HEGBIL catalyst was shown to be remarkably efficient in the selective nucleophilic hydroxylation of alkyl halides to produce the corresponding alcohols using water as a green solvent as well as a nucleophilic hydroxide source. The catalyst could be easily recycled, maintaining its catalytic activity and stability even after ten cycles with excellent yields. The main attributes of this catalyst include not only significantly enhancing the nucleophilicity of water in the reaction, but also promoting the conversion of polar and base-sensitive alkyl halide reactants to alcohols in excellent yields over a short reaction time. The combination of the advantageous properties of ionic liquids and polymeric materials affords quasi-homogeneous catalysts that are very easily recycled by simple filtration, which provides an environmentally benign technique for carrying out catalytic procedures.
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