Journal
TETRAHEDRON
Volume 63, Issue 16, Pages 3334-3339Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tet.2007.02.048
Keywords
CBS catalyst; crosslinking monomer; enantioselective reduction; polymer beads; polymer disks
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Two polymer-supported versions of the Corey, Bakshi, and Shibata (CBS) catalyst were prepared and examined. Polymeric beads, with the auxiliary bound in pendant and crosslinked fashion, were prepared utilizing an improved procedure based upon earlier work. Optimization of a procedure for ketone reduction gives results that match those in solution. Attempted reuse gave mixed results. For comparison purposes, CBS functionalized monoliths were formed and tested but performed poorly. (c) 2007 Elsevier Ltd. All rights reserved.
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