Chiral Cp‐Rhodium(III)‐Catalyzed Asymmetric Hydroarylations of 1,1‐Disubstituted Alkenes |
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| Authors: | Baihua Ye Dr Pavel A Donets Prof?Dr Nicolai Cramer |
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| Affiliation: | Laboratory of Asymmetric Catalysis and Synthesis, EPFL SB ISIC LCSA, BCH 4305, CH‐1015 Lausanne (Switzerland) http://isic.epfl.ch/lcsa |
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| Abstract: | Metal‐catalyzed functionalizations at the ortho position of a directing group have become an efficient bond‐forming strategy. A wide range of transformations that employ Cp*RhIII catalysts have been described, but despite their synthetic potential, enantioselective variants that use chiral versions of the Cp* ligand remain scarce (Cp*=pentamethyl cyclopentadienyl). Cyclopentadienyl compounds with an atropchiral biaryl backbone are shown to be suitable ligands for the efficient intramolecular enantioselective hydroarylation of aryl hydroxamates. Dihydrofurans that bear methyl‐substituted quaternary stereocenters are thus obtained by C? H functionalization under mild conditions. |
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| Keywords: | asymmetric catalysis C H activation cyclopentadienyl ligands hydroarylation rhodium |
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