4.8 Article

Benzylation of arenes with benzyl ethers promoted by the in situ prepared superacid BF3-H2O

Journal

GREEN CHEMISTRY
Volume 16, Issue 6, Pages 2976-2981

Publisher

ROYAL SOC CHEMISTRY
DOI: 10.1039/c4gc00005f

Keywords

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Funding

  1. National Science Foundation of China [21372265, 61271059]
  2. Scientific Research Fundings of the Scientific Research Foundation for the Returned Overseas Chinese Scholars
  3. State Education Ministry
  4. Natural Science Foundation Project of CQ CSTC [cstc2013jcyjA0217]
  5. Fundamental Research Funds for the Central Universities [CDJRC10220004, CDJZR11220005, CQDXWL-2013-Z012]

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An efficient and environmentally friendly benzylation of arenes with benzyl ethers as benzyl donors using BF3-Et2O to generate in situ the superacid BF3-H2O as an efficient promotor has been described. A wide variety of functional groups have been investigated and found to be compatible to give the desired diaryl-methanes in yields of up to 99%. The crucial role of the moisture content in this transformation has been demonstrated by detailed investigations.

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