4.3 Article

Direct Conversion of Pinacol Arylboronic Esters to Aryl Triolborates

Journal

CHEMISTRY LETTERS
Volume 40, Issue 7, Pages 702-704

Publisher

CHEMICAL SOC JAPAN
DOI: 10.1246/cl.2011.702

Keywords

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Funding

  1. Ministry of Education, Culture, Sports, Science and Technology, Japan [B01]
  2. Grants-in-Aid for Scientific Research [22550092] Funding Source: KAKEN

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Conversion of pinacol arylboronic esters 3 to aryl triolborates 5 via transesterification with 1,1,1-tris(hydroxymethyl)ethane (4) was established with the advantages of tolerance to various functional groups. Transesterification was carried out at 30-60 degrees C in dioxane in the presence of MOH (M = Na and K) and H2O. High yields were achieved for stable aryl triolborates 5.

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