Alcohols as Latent Coupling Fragments for Metallaphotoredox Catalysis: sp<sup>3</sup>–sp<sup>2</sup> Cross-Coupling of Oxalates with Aryl Halides
作者:Xiaheng Zhang、David W. C. MacMillan
DOI:10.1021/jacs.6b09533
日期:2016.10.26
Alkyl oxalates, prepared from their corresponding alcohols, are engaged for the first time as carbon radical fragments in metallaphotoredox catalysis. In this report, we demonstrate that alcohols, native organic functional groups, can be readily activated with simple oxalyl chloride to become radical precursors in a net redox-neutral Csp3-Csp2 cross-coupling with a broad range of aryl halides. This
Photoredox-catalyzed deoxyfluorination of activated alcohols with Selectfluor®
作者:María González-Esguevillas、Javier Miró、Jenna L. Jeffrey、David W.C. MacMillan
DOI:10.1016/j.tet.2019.05.043
日期:2019.8
Herein we disclose a deoxyfluorination of alcohols with an electrophilic fluorine source via visible-light photoredox catalysis. This radical-mediated C–F coupling is capable of fluorinating secondary and tertiary alcohols efficiently, complementing previously reported nucleophilic deoxyfluorination protocols.