Dual Nickel Photocatalysis for <i>O</i>-Aryl Carbamate Synthesis from Carbon Dioxide
作者:Aleksi Sahari、Jukka Puumi、Jere K. Mannisto、Timo Repo
DOI:10.1021/acs.joc.3c00023
日期:2023.3.17
photocatalyst-mediated reduction of Ni(II) to Ni(I) and subsequent oxidative addition of the aryl halide. The physical properties of the photocatalyst were critical for promotingformation of O-aryl carbamates over various byproducts. Nine new phthalonitrile photocatalysts were synthesized, which exhibited properties that were vital to achieve high selectivity and activity.
Photochemically Driven Nickel‐Catalyzed Carboxylative C−N Coupling: Scope and Mechanism**
作者:Seifallah Abid、Kevin P. Quirion、Yi Yang、Renhe Tang、Binh Khanh Mai、Peng Liu、Anis Tlili
DOI:10.1002/chem.202301271
日期:2023.8.4
The carboxylative Buchwald–Hartwigamination is disclosed herein under mild conditions of temperature and under atmospheric pressure of CO2. The key to success is the use of a dual strategy organophotocatalysis/nickel catalysis under visible light irradiation. The developed conditions demonstrated high functional group tolerance toward (hetero)aryl iodide and bromide. Furthermore, preliminary mechanistic