Intramolecular Hydride Transfer Reactions in (Formazanate)Boron Dihydride Complexes

Mu-Chieh Chang, Edwin Otten*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

17 Citations (Scopus)
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Abstract

The solution-phase thermolysis of (formazanate)boron dihydrides (LBH2; 2) results in the formation of aminoborane compounds (4) via a series of boron-to-ligand intramolecular hydride transfer reactions. Monitoring the reactions by NMR spectroscopy allowed identification of several intermediates, and a reaction mechanism is proposed. In the case of a ligand with an N-Mes substituent it was possible to characterize an intermediate (7b-i) during this transformation that shows an unexpected cyclohexadiene moiety, which results from hydride transfer to the ortho-position of the mesityl substituent. Two consecutive boron-to-ligand hydride transfers eventually result in reductive N-N bond cleavage to give triazaboroles as the final product.

Original languageEnglish
Pages (from-to)534-542
Number of pages9
JournalOrganometallics
Volume35
Issue number4
DOIs
Publication statusPublished - 22-Feb-2016

Keywords

  • DIFLUORIDE FORMAZANATE COMPLEXES
  • C-H BORYLATION
  • N-N BOND
  • HETEROAROMATIC-COMPOUNDS
  • ELECTROCHEMICAL PROPERTIES
  • TRANSITION-METALS
  • HYDROGEN STORAGE
  • AROMATIC RING
  • ARYL HALIDES
  • RARE-EARTH

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