Journal
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
Volume -, Issue 2, Pages 368-371Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ejic.201600834
Keywords
Boron; Phosphorus; Metallocenes; Frustrated Lewis pairs; Asymmetric catalysis; Hydrogenation
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Funding
- European Research Council
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The alpha-phosphanylferrocenecarbaldehyde (pS)-1 was converted into the beta-styryl derivative (pS)-4 by Wittig-Horner olefination. Subsequent hydroboration with Piers' borane [HB(C6F5)(2)] followed by H-2 splitting and crystallization gave the phosphonium/hydridoborate product (pS,R)-5, which was used as a frustrated Lewis pair catalyst for the asymmetric hydrogenation of a series of imines (up to 69% ee).
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