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Enantioselective Synthesis of Planar Chiral [Cr(η6-Arene)(CO)>3>] Complexes via Nucleophilic Addition/Hydride Abstraction

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Published in Helvetica Chimica Acta. 1997, vol. 80, no. 6, p. 2023-2026
Abstract Non-racemic, planar chiral 1, 2-disubstituted [Cr(?6-arene)(CO)3] complexes were obtained via external chiral ligand-controlled nucleophilic addition of alkyl-, vinyl-, and aryllithium reagents to monosubstituted complexes followed by an endo-hydride abstraction with trityl cation. The reactions with [Cr(CO)3(?6-phenyloxazoline)], [Cr(CO)3(?6-phenylmethaneimine)], and [Cr(CO)3 (?6-phenylmethanenydrazone)] took place with complete ortho-selectivity and a high degree of enantioselectivity (up to 98% ee).
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FRETZEN, Angelika, KUNDIG, Ernst Peter. Enantioselective Synthesis of Planar Chiral [Cr(η6-Arene)(CO)>3>] Complexes via Nucleophilic Addition/Hydride Abstraction. In: Helvetica Chimica Acta, 1997, vol. 80, n° 6, p. 2023-2026. https://archive-ouverte.unige.ch/unige:7824

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Deposited on : 2010-06-21

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