Photoinduced Halogen-Atom Transfer by <i>N</i>-Heterocyclic Carbene-Ligated Boryl Radicals for C(sp<sup>3</sup>)–C(sp<sup>3</sup>) Bond Formation
作者:Ting Wan、Luca Capaldo、Davide Ravelli、Walter Vitullo、Felix J. de Zwart、Bas de Bruin、Timothy Noël
DOI:10.1021/jacs.2c10444
日期:2023.1.18
study on the use of N-heterocyclic carbene (NHC)-ligated borylradicals to enable C(sp3)–C(sp3) bond formation under visible-light irradiation via Halogen-Atom Transfer (XAT). The methodology relies on the use of an acridinium dye to generate the boron-centered radicals from the corresponding NHC-ligated boranes via single-electron transfer (SET) and deprotonation. These borylradicals subsequently
Hydrogen Atom Transfer Reactions via Photoredox Catalyzed Chlorine Atom Generation
作者:Samantha Rohe、Avery O. Morris、Terry McCallum、Louis Barriault
DOI:10.1002/anie.201810187
日期:2018.11.26
waste‐limiting, and atom‐economical. The catalytic generation of chlorineatoms from chloride ions is one of the most challenging redox processes, where the requirement of harsh and oxidizing reaction conditions renders it seldom utilized in synthetic applications. We report the mild, controlled, and catalytic generation of chlorineatoms as a new opportunity for access to a wide variety of hydrogen atom transfer