Synthesis of Tetraarylmethanes by the Triflic Acid-Promoted Formal Cross-Dehydrogenative Coupling of Triarylmethanes with Arenes
作者:Masakazu Nambo、Jacky Yim、Kevin Fowler、Cathleen Crudden
DOI:10.1055/s-0036-1588563
日期:2017.12
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。