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While C(sp3)-S bonds exist in many biologically active compounds, the direct catalytic C(sp3)-H thiolation remains elusive. Herein, we report a convenient and green C(sp3)-H thiolation approach mediated by using tetrabutylammonium decatungstate (TBADT) as a hydrogen atom transfer (HAT) photocatalyst. A wide range of C(sp3)-H bond-containing etheric, allylic, alkyl, ketonic, amidic substrates and sulfonyl-based SOMOphiles participated in the reaction, producing thioethers with high efficiency. The present protocol features green characteristics, such as being free of harmful oxidants and additives; step-economic; redox-neutral; and amenable to scale-up assisted by continuous-flow technology.
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Liu et al. (2024) studied this question.
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