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.
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。