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- W4387004039 abstract "Herein, we report a photoinduced approach for hydroarylation of unactivated olefins using 4-hydroxycoumarins as the arylating reagent. Key to the success of this reaction is the conversion of nucleophilic 4-hydroxycoumarins into electrophilic carbon radicals via photocatalytic arene oxidation, which not only circumvents the polarity-mismatch issue encountered under ionic conditions but also accommodates a broad substrate scope and inhibits side reactions that were previously observed. Moreover, divergent reactivity was achieved by changing the photocatalyst, enabling a subsequent [2+2] cycloaddition to deliver cyclobutane-fused pentacyclic products that are otherwise challenging to access in high yields and with high diastereoselectivity. Mechanistic studies have elucidated the mechanism of the reactions and the origin of the divergent reactivity." @default.
- W4387004039 created "2023-09-26" @default.
- W4387004039 creator A5002325400 @default.
- W4387004039 creator A5030887179 @default.
- W4387004039 creator A5031330161 @default.
- W4387004039 date "2023-10-09" @default.
- W4387004039 modified "2023-10-18" @default.
- W4387004039 title "Divergent Photosensitizer Controlled Reactions of 4‐Hydroxycoumarins and Unactivated Olefins: Hydroarylation and Subsequent [2 + 2] Cycloaddition" @default.
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