Chiral ansa-bridged η5-cyclopentadienyl molybdenum complexes: Synthesis, structure and application in asymmetric olefin epoxidation

  • Zhao J
  • Herdtweck E
  • Kühn F
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Ansa-bridged η5-cyclopentadienyl carbonyl molybdenum complexes were synthesized with stereogenic centers located in the side chain. An exemplary X-ray crystal structure and the catalytic activity for asymmetric olefin epoxidation are reported. In non-chiral epoxidation the compounds show a good catalytic activity, comparable to activities observed for the related non-chiral complexes of composition CpMo(CO)3X (X = Cl, CH3). For the asymmetric epoxidation of trans-β-methylstyrene the chiral induction is up to ca. 20%. The high ring strain of the ansa-bridged system hampers, unfortunately, its stability under oxidative condition. © 2005 Elsevier B.V. All rights reserved.

Author-supplied keywords

  • Chirality
  • Cyclopentadienyl
  • Molybdenum
  • Olefin epoxidation

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  • Jin Zhao

  • Eberhardt Herdtweck

  • Fritz E. Kühn

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