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Direct regioselective C-H borylation of [5]helicene

RSC Advances, ISSN: 2046-2069, Vol: 8, Issue: 1, Page: 580-583
2018
  • 14
    Citations
  • 0
    Usage
  • 14
    Captures
  • 0
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    14
    • Citation Indexes
      14
  • Captures
    14

Article Description

Ir-catalyzed borylation of [5]helicene was studied for the first time. The obtained results indicate that borylation proceeded preferentially at the 2- and 3-positions. By using an appropriate catalytic system, 3-borylated [5]helicene can be formed as the major product in a high yield and regioselectivity (up to 89%, 8:1 ratio of isomers). The monoborylated [5]helicenes were further utilized in a Suzuki-Miyaura cross-coupling reaction to produce 2- or 3-arylated helicenes in very good isolated yields (80-94%).

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