Sterically Hindered Ketones via Palladium-Catalyzed Suzuki–Miyaura Cross-Coupling of Amides by N–C(O) Activation
作者:Chengwei Liu、Roger Lalancette、Roman Szostak、Michal Szostak
DOI:10.1021/acs.orglett.9b02961
日期:2019.10.4
protocol for the synthesis of sterically hindered ketones that proceeds via palladium-catalyzed Suzuki–Miyaura cross-coupling of unconventional amide electrophiles by selective N–C(O) activation. Mechanistic studies demonstrate that steric bulk on the amide has a major impact, which is opposite to the traditional Suzuki–Miyaura cross-coupling of sterically hindered aryl halides. Structural and computational
在本文中,我们报告了一种通过钯催化的非常规酰胺亲电试剂通过选择性N-C(O)活化的Suzuki-Miyaura钯偶联交叉反应而合成的位阻酮的新方法。机理研究表明,酰胺上的空间位阻具有重大影响,这与空间受阻的芳基卤化物的传统Suzuki-Miyaura交叉偶联相反。结构和计算研究提供了对空间受阻酰胺基态畸变的洞察力,并表明邻位取代可减轻N–C(O)键的扭曲。