Selective Transformation of Strychnine and 1,2-Disubstituted Benzenes by C–H Borylation

DOI Web Site Web Site 研究データあり 被引用文献4件 参考文献54件

書誌事項

公開日
2020-04
資源種別
journal article
権利情報
  • https://www.elsevier.com/tdm/userlicense/1.0/
  • https://www.elsevier.com/legal/tdmrep-license
  • http://www.elsevier.com/open-access/userlicense/1.0/
DOI
  • 10.1016/j.chempr.2020.02.004
公開者
Elsevier BV

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説明

Summary C–H functionalizations of complex molecules such as natural products, pharmaceuticals, and π-conjugated systems are at the heart of constructing and modifying organic molecules, whereby the selectivity and predictability are of the utmost importance. Herein, we report the highly C3-selective C–H borylation of strychnine along with olefin isomerization, catalyzed by an iridium complex with a diphosphine ligand. This method enabled us to rapidly produce 15 strychnine derivatives by using the corresponding C3-borylated and isomerized analog as the common synthetic intermediate. The present catalyst system was also generally effective for the C–H functionalization of unsymmetric 1,2-disubstituted benzene derivatives, including fused π-systems (xanthenes, fluorenes, naphthalenes, and anthracenes) and pharmaceuticals (Nifedipine), in which the C–H positions furthest away from the bulky groups were borylated with high selectivity.

収録刊行物

  • Chem

    Chem 6 (4), 985-993, 2020-04

    Elsevier BV

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