Synthesis of Tetraarylmethanes by the Triflic Acid-Promoted Formal Cross-Dehydrogenative Coupling of Triarylmethanes with Arenes
Synthesis of Tetraarylmethanes by the Triflic Acid-Promoted Formal Cross-Dehydrogenative Coupling of Triarylmethanes with Arenes
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DOI：
10.1055/s-0036-1588563
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发表时间：
2017-12-01
期刊：
影响因子：
2
通讯作者：
Crudden, Cathleen M.
中科院分区：
文献类型：
--
作者：
Nambo, Masakazu;Yim, Jacky C. -H.;Crudden, Cathleen M.
本文报道了三氟甲磺酸和2，3-二氯-5，6-二氰基-1，4-苯醌促进的三芳基甲烷与芳烃的形式交叉偶联反应。该方法从三芳基甲烷以良好至优异的产率提供了多种四芳基甲烷衍生物，这些衍生物可以通过我们以前的方法容易地制备。对照实验表明，一个可能的催化循环，涉及生成的三苯甲基阳离子中间体，然后亲核加成的芳烃。
The formal cross-dehydrogenative coupling of triarylmethanes with arenes promoted by triflic acid and 2,3-dichloro-5,6-dicyano-1,4-benzoquinone is described. This method provides a variety of tetraarylmethane derivatives in good to excellent yields from triarylmethanes that can be readily prepared by our previous methods. Control experiments suggest a possible catalytic cycle involving the generation of a trityl cation intermediate followed by nucleophilic addition of the arene.