N-Aryl Groups Are Ubiquitous in Cross-Dehydrogenative Couplings Because They Stabilize Reactive Intermediates
作者:Althea S.-K. Tsang、A. Stephen K. Hashmi、Peter Comba、Marion Kerscher、Bun Chan、Matthew H. Todd
DOI:10.1002/chem.201700430
日期:2017.7.12
mechanism of cross‐dehydrogenative coupling (CDC) reactions has been examined by experimental and computational methods. We provide a rationale for the ubiquity of the N‐aryl group in these reactions. The aryl substituent stabilizes two intermediates and the high‐energy transition state that connects them, which together represent the rate‐determining step. This knowledge has enabled us to predict whether
交叉脱氢偶联(CDC)反应的机理已通过实验和计算方法进行了检验。我们为这些反应中N-芳基的普遍性提供了理论依据。芳基取代基可稳定两个中间体以及将它们连接的高能过渡态,它们共同代表了决定速率的步骤。这些知识使我们能够预测新的CDC底物是好是坏。