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Synlett 1999; 1999(4): 421-425
DOI: 10.1055/s-1999-2626
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Transition Metal Complexes in Organic Synthesis, Part 49. Development of Novel Chiral Catalysts for the Asymmetric Catalytic Complexation of Prochiral Cyclohexa-1,3-dienes by the Tricarbonyliron Fragment - Mechanism of the Asymmetric Catalysis and Involvement of a Dinuclear Iron Cluster

Hans-Joachim Knölker* , Helmut Goesmann, Holger Hermann, Daniela Herzberg, Guy Rohde
  • *Institut für Organische Chemie, Universität Karlsruhe, Richard-Willstätter-Allee, D-76131 Karlsruhe, Germany; Fax +49(7 21)6 98-5 29; E-mail: knoe@ochhades.chemie.uni-karlsruhe.de
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Publication Date:
31 December 1999 (online)

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Planar-chiral tricarbonyliron-diene complexes are obtained quantitatively in up to 73% ee by asymmetric catalytic complexation of prochiral cyclohexa-1,3-dienes. A series o novel chiral 1-azabuta-1,3-diene catalysts is investigated. The mechanism is shown to involve at least in some cases dinuclear iron cluster compounds which lead to a lower asymmetric induction.

asymmetric catalysis - chirality - cluster - diene complexes - iron compounds