Journal
TETRAHEDRON-ASYMMETRY
Volume 15, Issue 6, Pages 1007-1011Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetasy.2004.01.014
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A new efficient catalytic enantioselective electrophilic fluorination of cyclic and acyclic beta-ketoesters is developed. As low as 1 mol % of chiral bis(oxazoline)-copper triflate complexes catalyses the fluorination by means of N-fluorobenzenesulfonimide. The use of 1,1,1,3,3,3-hexafluoroisopropanol (HFIP) is crucial for achieving high enantio selectivity. (C) 2004 Elsevier Ltd. All rights reserved.
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