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2004
Enantioselective syntheses
O 0031
t-BuOK-Mediated Hydrophosphination of Functionalized Alkenes: A Novel Synof Chiral P,N- and P,P-Ligands. — The tBuOK-mediated hydrophosphination
46- 030 thesis
of optically active camphor- and norpinone-derived alkenes provides a new convenient
access towards chiral P,N-bidentate ligands which are successfully applied in the asymmetric Ir-catalyzed hydrogenation of alkenes (I), (III), (V) as well as dehydroamino
acid (VII). Additionally, a related chiral P,P-bidentate ligand is used for the asymmetric
Rh-catalyzed hydroboration of styrene (IX). Enantioselectivities of up to 97% e.e. are
achieved. — (BUNLAKSANANUSORN, T.; KNOCHEL*, P.; J. Org. Chem. 69
(2004) 14, 4595-4601; Fachbereich Chem., Ludwig-Maximilians-Univ.,
D-81377 Muenchen, Germany; Eng.) — Mischke
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