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.

中文翻译：

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通过三氟甲磺酸促进的三芳基甲烷与芳烃的正式交叉脱氢偶联合成四芳基甲烷

描述了由三氟甲磺酸和 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正式交叉脱氢偶联。该方法提供了多种四芳基甲烷衍生物，从三芳基甲烷可以很容易地通过我们以前的方法制备。对照实验表明可能存在催化循环，包括生成三苯甲基阳离子中间体，然后是芳烃的亲核加成。