Site-selective and metal-free C-H phosphonation of arenes via photoactivation of thianthrenium salts

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Abstract

Aryl phosphonates are prevalent moieties in medicinal chemistry and agrochemicals. Their chemical synthesis normally relies on the use of precious metals, harsh conditions or aryl halides as substrates. Herein, we describe a sustainable light-promoted and site-selective C-H phosphonation of arenes via thianthrenation and the formation of an electron donor-acceptor complex (EDA) as key steps. The method tolerates a wide range of functional groups including biomolecules. The use of sunlight also promotes this transformation and our mechanistic investigations support a radical chain mechanism.

Original languageEnglish
Pages (from-to)23359-23364
Number of pages6
JournalRSC ADVANCES
Volume13
Issue number33
DOIs
Publication statusPublished - 8 Aug 2023

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