我们在此报告了一种由“大体积但还灵活”的Pd-PEPPSI-IPent An复合物进行的高效Pd催化胺化反应。讨论了N-杂环卡宾(NHCs)结构与催化性能之间的关系。可以在该交叉偶联中应用立体受阻的(杂)芳基氯化物以及各种脂肪族和芳香族胺,它们可以顺利进行以提供所需的产物。操作简单的协议强调了在不排除空气和水分的情况下,在温和条件下可快速获得C Ar -N键的形成。
Selective Monoarylation of Primary Amines Using the Pd-PEPPSI-IPent<sup>Cl</sup>Precatalyst
作者:Sepideh Sharif、Richard P. Rucker、Nalin Chandrasoma、David Mitchell、Michael J. Rodriguez、Robert D. J. Froese、Michael G. Organ
DOI:10.1002/anie.201502822
日期:2015.8.10
A single set of reaction conditions for the palladium‐catalyzed amination of a wide variety of (hetero)aryl halides using primaryalkyl amines has been developed. By combining the exceptionally high reactivity of the Pd‐PEPPSI‐IPentCl catalyst (PEPPSI=pyridine enhanced precatalyst preparation, stabilization, and initiation) with the soluble and nonaggressive sodium salt of BHT (BHT=2,6‐di‐tert‐butyl‐hydroxytoluene)