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Au(III) catalyst supported on a thermoresponsive hydrogel and its application to the A-3 coupling reaction in water

Title
Au(III) catalyst supported on a thermoresponsive hydrogel and its application to the A-3 coupling reaction in water
Author
이학준
Keywords
Gold catalyst; Hydrogel; Low critical solution temperature; A-3 coupling reaction; Heterogeneous catalysis; Polymer
Issue Date
2015-02
Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
Citation
JOURNAL OF CATALYSIS, v. 322, Page. 104-108
Abstract
Poly(NIPAM-co-4-VP), synthesized from N-isopropylacrylamide and 4-vinylpyridine with a 1:1 monomer ratio, exhibits a temperature-dependent phase transition in water with a low critical solution temperature (LCST) of 47 degrees C. Coordination of Au(III) with the polymer results in material with metal catalytic activity combined with the inverse solubility phenomenon of the polymer, which catalyzes the three-component coupling reaction of aldehydes, amines, and alkynes in water with excellent yields. The polymer not only functions as a supporter for Au(III) but also accelerates the catalysis by undergoing a coil-to-globule phase transition above the LCST. The catalyst is efficient, is stable in air, and tolerates a variety of substrates. Moreover, the recyclability of the catalyst makes it eco-friendly and economical to use. (C) 2014 Elsevier Inc. All rights reserved.
URI
http://www.sciencedirect.com/science/article/pii/S0021951714003212http://hdl.handle.net/20.500.11754/22398
ISSN
0021-9517; 1090-2694
DOI
10.1016/j.jcat.2014.11.009
Appears in Collections:
GRADUATE SCHOOL[S](대학원) > BIONANOTECHNOLOGY(바이오나노학과) > Articles
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