可见光诱导2-亚胺- 2h -铬-3-碳腈的选择性C−H芳基化和2-氧- 2h -铬-3-羧酸的脱羧性ipso芳基化

IF 3 4区化学 Q3 CHEMISTRY, PHYSICAL

ChemPhotoChem Pub Date : 2024-09-21 DOI:10.1002/cptc.202400233

Tanmoy Sahoo, Swarnayu Banik, Dasari Vijaya Prasanna, Dr. B. Sridhar, Dr. B. V. Subba Reddy

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引用次数: 0

摘要

在没有碱或酸和氧化剂的温和条件下，在可见光诱导下，2-亚胺-2 - h -铬-3-碳腈的选择性芳基化和香豆素-3-羧酸的脱羧性异芳基化已经完成。利用蓝色led作为激发源，Ru（II）配合物通过单电子转移过程生成芳基自由基，随后与2-亚胺- 2h -铬-3-碳腈和2-氧- 2h -铬-3-羧酸反应生成所需产物。这是第一个不使用酸或碱的共轭体系选择性芳基化的报告。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Visible-Light Induced Selective C−H Arylation of 2-Imino-2H-Chromene-3-Carbonitriles and Decarboxylative Ipso-Arylation of 2-Oxo-2H-Chromene-3-Carboxylic Acids

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Visible-Light Induced Selective C−H Arylation of 2-Imino-2H-Chromene-3-Carbonitriles and Decarboxylative Ipso-Arylation of 2-Oxo-2H-Chromene-3-Carboxylic Acids

Visible-light induced selective arylation of 2-imino-2H-chromene-3-carbonitriles and decarboxylative ipso-arylation of coumarin-3-carboxylic acids have been accomplished under mild conditions in the absence of either base or acid and oxidant. By employing blue LEDs as an excitation source, the aryl radicals are generated by Ru(II) complex through a single-electron transfer process, which subsequently react with 2-imino-2H-chromene-3-carbonitriles and 2-oxo-2H-chromene-3-carboxylic acids to produce the desired products. This is the first report on selective arylation of conjugated systems without using either an acid or a base.

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来源期刊

ChemPhotoChem Chemistry-Physical and Theoretical Chemistry

CiteScore

5.80

自引率

5.40%

发文量

165

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