4.8 Article

Direct and Base-Catalyzed Diboration of Alkynes Using the Unsymmetrical Diborane(4), pinB-BMes2

Journal

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 138, Issue 20, Pages 6662-6669

Publisher

AMER CHEMICAL SOC
DOI: 10.1021/jacs.6b03686

Keywords

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Funding

  1. MEXT [24109012, 26288019]
  2. Research Grants Council of Hong Kong [HKUST603313, CUHK7/CRF/12G]
  3. CREST from JST
  4. Science Research Promotion Fund
  5. Asahi Glass Foundation
  6. Grants-in-Aid for Scientific Research [26288019, 24109012] Funding Source: KAKEN

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In the absence of transition metal catalysts, the unsymmetrical diborane(4), pinB-BMes(2), reacted with alkynes to afford diborylalkenes. The isomer ratio of the products could be controlled via temperature, solvent, and additive(s). A reaction mechanism was proposed on the basis of two isolated intermediates, and this reaction could furthermore be applied to synthesize a luminescent molecule.

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