Cr-mediated photocatalytic decarboxylative coupling of alpha-oxo acids with benzylic pyridinium salts

Cao, Jia; Liu, Yan; Wang, Zhixiang; Liu, Le

doi:10.1039/d4qo00475b

Org. Chem. Front.

2024

DOI: 10.1039/d4qo00475b

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Cr-mediated photocatalytic decarboxylative coupling of alpha-oxo acids with benzylic pyridinium salts

Jia Cao,

Yan Liu,

Zhixiang Wang

et al.

Abstract: Herein, we report the chromium/photoredox dual catalytic synthesis of ketones using α-oxo acids with benzylic pyridinium salts. This reaction proceeded by photocatalytic generation of acyl radical from α-oxo acids and...

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Chromium in Visible‐Light Photocatalysis: Unique Reactivity, Mechanisms and Future Directions

Shen,

2024

Eur J Org Chem

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Visible‐light photocatalysis has emerged as a prominent research area in modern organic synthesis and environmental science. As an important transition metal, chromium has garnered widespread attention in the field of visible‐light photocatalysis in recent years, primarily manifested in the following aspects: a) the unique photochemical properties of chromium(III) complexes endow them with longer excited‐state lifetimes and higher reactivities; b) by harnessing visible light to induce single‐electron transfer or hydrogen atom transfer to generate radicals, which subsequently form alkyl‐chromium(III) intermediates with chromium(II) ligands, these intermediates can selectively attack electron‐deficient carbonyl compounds, enabling the construction of target products; c) following metals like cerium, copper, iron, nickel, cobalt, titanium, and bismuth, the ligand‐to‐metal charge transfer (LMCT) reaction pathways in chromium photocatalysis have also been extensively investigated.This review will provide a comprehensive summary of recent research on chromium‐mediated photocatalytic reactions, offering an in‐depth exploration of their unique reactivity, mechanisms, and future directions.

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Chromium in Visible‐Light Photocatalysis: Unique Reactivity, Mechanisms and Future Directions

Shen,

2024

Eur J Org Chem

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Cr-mediated photocatalytic decarboxylative coupling of alpha-oxo acids with benzylic pyridinium salts

Abstract: Herein, we report the chromium/photoredox dual catalytic synthesis of ketones using α-oxo acids with benzylic pyridinium salts. This reaction proceeded by photocatalytic generation of acyl radical from α-oxo acids and...

Cited by 1 publication

References 84 publications

Chromium in Visible‐Light Photocatalysis: Unique Reactivity, Mechanisms and Future Directions

Chromium in Visible‐Light Photocatalysis: Unique Reactivity, Mechanisms and Future Directions

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