• 제목/요약/키워드: intermediates

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Mechanistic Study of Half-titanocene-based Reductive Pinacol Coupling Reaction

  • Kim, Young-Jo;Do, Young-Kyu;Park, Sung-Jin
    • Bulletin of the Korean Chemical Society
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    • 제32권11호
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    • pp.3973-3978
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    • 2011

  • The reductive pinacol coupling reaction of aldehydes or ketones creating a new C-C bond has been a major tool to produce 1,2-diol compounds. The reaction mechanism is known to be composed of sequential three steps (activation, coupling, and dissociation). In this work, we studied the dissociation step of half-titanocene-based catalytic systems. Cp and $Cp^*$ derivatives of the pinacolato-bridged dinuclear complex were synthesized and evaluated as possible models for intermediates from the coupling step. We monitored $^1H$-NMR spectra of the reaction between the metalla-pinacol intermediates and $D_2O$. New reaction routes of the dissociation step including oxo- and pinacolato-dibridged dinuclear complexes and oxo-bridged multinuclear complexes have been suggested.

  • https://doi.org/10.5012/bkcs.2011.32.11.3973 인용 PDF KSCI