Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 54, Issue 41, Pages 12149-12152Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201506483
Keywords
asymmetric catalysis; cycloisomerization; cyclopentadienyl ligands; enantioselectivity; iridium
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Funding
- European Research Council (ERC) [257891]
- DAAD
- European Research Council (ERC) [257891] Funding Source: European Research Council (ERC)
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The cyclopentadienyl (Cp) group is a very important ligand for many transition-metal complexes which have been applied in catalysis. The availability of chiral cyclopentadienyl ligands (Cp-x) lags behind other ligand classes, thus hampering the investigation of enantioselective processes. We report a library of chiral (CpIrIII)-Ir-x complexes equipped with an atropchiral Cp scaffold. A robust complexation procedure reliably provides (CpIrIII)-Ir-x complexes with tunable counterions. In a proof-of-concept application, the iodide-bearing members are shown to be highly selective for enyne cycloisomerization reactions. The dehydropiperidine-fused cyclopropane products are formed in good yields and enantioselectivities.
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