Site-Selective C–H Functionalization of <i>N</i>-Aryl and <i>N</i>-Heteroaryl Piperidines, Morpholines, and Piperazines Controlled by a Chiral Dirhodium Tetracarboxylate Catalyst
作者:Korkit Korvorapun、Yannick T. Boni、Thomas C. Maier、Armin Bauer、Thomas Licher、John E. Macor、Volker Derdau、Huw M. L. Davies
DOI:10.1021/acscatal.2c05283
日期:2023.2.17
Rhodium-catalyzed C–H insertion by donor/acceptor carbenes is a useful transformation in organic synthesis. However, the site-selectivity of the C–H transformation on the target molecule is often a major issue. Site-selective C–H functionalizations of challenging substrates like N-aryl- and N-heteroaryl piperidines could be achieved through chiral rhodium carbene intermediates, leading to the formation
由供体/受体卡宾进行的铑催化的 C-H 插入是有机合成中的一种有用转化。然而,目标分子上 C-H 转化的位点选择性通常是一个主要问题。通过手性铑卡宾中间体,可以实现N -芳基和N -杂芳基哌啶等具有挑战性的底物的位点选择性 C-H 功能化,从而形成高度立体选择性的 C-2 产物。此外,N-芳基吗啉和哌嗪在α位选择性地与N-芳基反应。