The photocatalyst-free electron donor–acceptor
(EDA) complex
photochemistry was deemed to expand the potential of photodriven radical
chemistry. Here, we report a cross-coupling reaction of thianthrenium
salt functionalized arenes and sodium sulfinates via a photopromoted
single electron transfer (SET) process of an EDA complex. A series
of biarylsulfones were obtained with high site-selectivity and reactivity.
This mild and practical radical reaction could be applied on the bioactive
and DNA-encoded molecules.
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