4.7 Article

Synthesis of phenothiazines via ligand-free CuI-catalyzed cascade C-S and C-N coupling of aryl ortho-dihalides and ortho-aminobenzenethiols

Journal

CHEMICAL COMMUNICATIONS
Volume 48, Issue 43, Pages 5367-5369

Publisher

ROYAL SOC CHEMISTRY
DOI: 10.1039/c2cc30814b

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Funding

  1. Sci-Tech Bureau of Sichuan [2011HH0016]
  2. State Key Lab of Geohazard Prevention and Geoenvironment Protection [SKLGP2012K005]
  3. Chengdu University of Technology [HY0084]

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A ligand-free CuI-catalyzed cascade C-S and C-N cross coupling of (hetero)aryl ortho-dihalides and ortho-aminobenzenethiols has been developed, and various phenothiazines were synthesized with excellent regioselectivity. A possible mechanism is proposed for the cascade coupling.

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