Reactivity and mechanistic insight into the cross coupling reaction between isochromans and β-keto esters through C–H bond activation under visible light irradiation

Literature Information

Publication Date 2016-02-10
DOI 10.1039/C5QO00412H
Impact Factor 5.281
Authors

Ming Xiang, Qing-Yuan Meng, Xue-Wang Gao, Tao Lei, Bin Chen, Chen-Ho Tung, Li-Zhu Wu


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Abstract

The visible light catalytic cross coupling reaction from two different C–H bonds provides an efficient protocol for C–H bond activation and C–C bond construction. The application of the oxidative photoredox strategy to couple C–H bonds next to an oxygen atom with other C–H bonds is more challenging because of the more positive oxidation potential of ethers than that of amines. Here, we take advantage of organic dye 9-mesityl-10-methylacridinium perchlorate (Acr+-Mes ClO4−) as the photosensitizer and BrCCl3 as the terminal oxidant to achieve the addition of β-keto esters to oxonium species, directly generated from isochromans, leading to the formation of alkylation products in the α-position of an oxygen atom under visible light irradiation.

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Organic Chemistry Frontiers

Organic Chemistry Frontiers
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Self-citation Rate: 8.7%
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Organic Chemistry Frontiers publishes high-quality research from across organic chemistry. Emphases are placed on studies that make significant contributions to the field of organic chemistry by reporting either new or significantly improved protocols or methodologies. Topics include, but are not limited to the following: Organic synthesis Development of synthetic methodologies Catalysis Natural products Functional organic materials Supramolecular and macromolecular chemistry Physical and computational organic chemistry

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