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![[(DPEPhos)(bcp)Cu]PF6: A General and Broadly Applicable Copper-Based Photoredox Catalyst](/_next/image?url=https%3A%2F%2Fcloudfront.jove.com%2FCDNSource%2Fteasers%2F59739.jpg&w=3840&q=50)
[(DPEPhos)(bcp)Cu]PF6: A General and Broadly Applicable Copper-Based Photoredox Catalyst
Published on: May 21, 2019
Unique radical dearomatization and two-electron reduction of a redox-active ligand
Daniel A Evans1, Alan H Cowley
1Department of Chemistry and Biochemistry, The University of Texas at Austin, Austin, Texas 78712, United States.
Abstract:
The syntheses and characterizations of [Li(4)][(1,2-di-(tert-butyl)-dpp-BIAN)(2)] (7), (1,2-di-(tert-butyl)-dpp-BIAN) (8), and (1-(tert-butyl)-2-OH-dpp-BIAN) (9) are described. Compound 7 was formed via a radical dearomatization, two-electron reduction pathway that was accompanied by vicinal di-tert-butylation of the BIAN ligand backbone. Oxidation of 7 afforded a dearomatized vicinal di-tert-butyl substituted BIAN ligand (8). An analogous dearomatized vicinal tert-butyl-hydroxy substituted BIAN ligand (9) was also isolated in the course of mechanistic studies related to the formation of 7.
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