Issue 4, 2023

Visible-light-induced selective defluoroalkylations of polyfluoroarenes with alcohols

Abstract

To provide α-polyfluoroarylalcohols, a novel protocol for the selective defluoroalkylation of polyfluoroarenes with easily accessible alcohols was reported via the cooperation of photoredox and hydrogen atom transfer (HAT) strategies with the assistance of Lewis acids under visible light irradiation. The protocol featured broad scope, excellent regioselectivity for both C–H and C–F bond cleavages, and mild conditions. Mechanistic studies suggested that the reaction occurred through Lewis acid-promoted HAT to provide an alkyl radical and sequential addition to polyfluoroarenes. Impressively, the regioselectivity for C–F cleavage was verified with the Fukui function. The feasibility and application of this protocol on fluoroarene synthesis were well illustrated by gram-scale synthesis under both batch and flow conditions, late-stage decoration of bioactive compounds, and further transformations of the fluoroarylalcohols.

Graphical abstract: Visible-light-induced selective defluoroalkylations of polyfluoroarenes with alcohols

Supplementary files

Article information

Article type
Edge Article
Submitted
15 Nov 2022
Accepted
20 Dec 2022
First published
21 Dec 2022
This article is Open Access

All publication charges for this article have been paid for by the Royal Society of Chemistry
Creative Commons BY-NC license

Chem. Sci., 2023,14, 916-922

Visible-light-induced selective defluoroalkylations of polyfluoroarenes with alcohols

W. Xu, Q. Shao, C. Xia, Q. Zhang, Y. Xu, Y. Liu and M. Wu, Chem. Sci., 2023, 14, 916 DOI: 10.1039/D2SC06290A

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