Chain Walking of Allylrhodium Species Towards Esters During Rhodium‐Catalyzed Nucleophilic Allylations of Imines

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Martínez, Jose I. ; Smith, Joshua J. ; Hepburn, Hamish B. ; Lam, Hon Wai (2015)
  • Publisher: John Wiley and Sons Inc.
  • Journal: Angewandte Chemie (International Ed. in English), volume 55, issue 3, pages 1,108-1,112 (issn: 1433-7851, eissn: 1521-3773)
  • Related identifiers: doi: 10.1002/anie.201508964/full, doi: 10.1002/anie.201508964, pmc: PMC4736453
  • Subject: Chain Walking | Communications | allyltrifluoroborates | isomerization | imines | asymmetric catalysis | Communication | rhodium

Abstract Allylrhodium species derived from δ‐trifluoroboryl β,γ‐unsaturated esters undergo chain walking towards the ester moiety. The resulting allylrhodium species react with imines to give products containing two new stereocenters and a Z‐alkene. By using a chiral diene ligand, products can be obtained with high enantioselectivities, where a pronounced matched/mismatched effect with the chirality of the allyltrifluoroborate is evident.
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