4.8 Article

Copper-Catalyzed Chemoselective Silylative Cyclization of 2,2′-Diethynylbiaryl Derivatives

Journal

ORGANIC LETTERS
Volume 23, Issue 10, Pages 3859-3863

Publisher

AMER CHEMICAL SOC
DOI: 10.1021/acs.orglett.1c00968

Keywords

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Funding

  1. National Natural Science Foundation of China [21871240]
  2. State Key Laboratory of Elementoorganic Chemistry Nankai University [202001]
  3. Fundamental Research Funds for the Central Universities [WK2060000017]

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In this study, copper-catalyzed diverse silylative carbocyclization reactions were reported, leading to the discovery of three new types of domino reactions for the transformation of silaboronate with high efficiency and selectivity.
In this protocol, copper-catalyzed diverse silylative carbocyclization reactions of 2,2'-diethynylbiaryl derivatives with silaboronate were reported. Three new and novel types of domino reactions for the copper-catalyzed transformation of silaboronate were discovered. The corresponding cyclobuta[l]phenanthrene, bis((silyl)methyl)phenanthrene, and silyl-substituted exocyclic diene products were chemoselectively formed with high efficiency.

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