Intramolecular Hydrogen Atom Transfer Hydroarylation of Alkenes toward δ‑Lactams Using Cobalt-Photoredox Dual Catalysis

Intramolecular Hydrogen Atom Transfer Hydroarylation of Alkenes toward δ‑Lactams Using Cobalt-Photoredox Dual Catalysis

Intramolecular hydroarylation of alkenes through hydrogen atom transfer (HAT) represents a robust method to prepare benzo-fused heterocycles. However, the reported methods have limitations in a variety of accessible cyclic scaffolds. Here we report a dual cobalt- and photoredox-catalyzed HAT hydroar...

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Veröffentlicht in:Organic letters 2022-04, Vol.24 (12), p.2441-2445
Hauptverfasser: Yamaguchi, Yuto, Seino, Yusuke, Suzuki, Akihiko, Kamei, Yuji, Yoshino, Tatsuhiko, Kojima, Masahiro, Matsunaga, Shigeki
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Sprache:eng
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Alkenes
Catalysis
Cobalt
Hydrogen
Lactams
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container_end_page 2445
container_issue 12
container_start_page 2441
container_title Organic letters
container_volume 24
creator Yamaguchi, Yuto
Seino, Yusuke
Suzuki, Akihiko
Kamei, Yuji
Yoshino, Tatsuhiko
Kojima, Masahiro
Matsunaga, Shigeki
description Intramolecular hydroarylation of alkenes through hydrogen atom transfer (HAT) represents a robust method to prepare benzo-fused heterocycles. However, the reported methods have limitations in a variety of accessible cyclic scaffolds. Here we report a dual cobalt- and photoredox-catalyzed HAT hydroarylation of alkenes that is characterized by higher efficiency in the synthesis of a δ-lactam compared to established protocols. The proposed mechanism is supported by experiments and DFT calculations.
doi_str_mv 10.1021/acs.orglett.2c00700
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subjects Alkenes
Catalysis
Cobalt
Hydrogen
Lactams
title Intramolecular Hydrogen Atom Transfer Hydroarylation of Alkenes toward δ‑Lactams Using Cobalt-Photoredox Dual Catalysis
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