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Chriral proline-derivative anchored on mesoporous silicas and their application to the asymmetric diethylzinc addition to benzaldehyde

Cited 34 time in Web of Science Cited 33 time in Scopus
Authors
Kim, Sang-Wook; Bae, Sung Jin; Hyeon, Taeghwan; Kim, Byeong Moon
Issue Date
2001-06
Citation
Microporous and Mesoporous Materials, Vol.44-45, pp.523-529
Keywords
asymmetricdiethylzincmesoporousheterogeneousenantioselectivity
Abstract
We developed new heterogeneous catalysts employing a proline-derived ligand immobilized on mesoporous silicas (MCM-41 and SBA-15) and they were applied to asymmetric diethylzinc addition to benzaldehyde. The reaction enantioselectivity was found to be largely dependent upon the pore size of the mesoporous silicas, capping of free silanol moiety with trimethylsilyl (TMS) group and employment of n-BuLi. High enantioselectivity (75% e.e.) was achieved when both TMS capping and n-BuLi addition were applied for the large pore-sized SBA-15 based catalyst. (C) 2001 Elsevier Science B.V. All rights reserved.
ISSN
1387-1811
URI
http://hdl.handle.net/10371/166092
DOI
https://doi.org/10.1016/S1387-1811(01)00230-X
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College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Chemical and Biological Engineering (화학생물공학부)Journal Papers (저널논문_화학생물공학부)
College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Chemical and Biological Engineering (화학생물공학부)Chemical Convergence for Energy and Environment (에너지환경 화학융합기술전공)Journal Papers (저널논문_에너지환경 화학융합기술전공)
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