作者:Stanko, Allison M.、Ramirez, Melissa、de Almenara, Adrian J.、Virgil, Scott C.、Stoltz, Brian M.
DOI:10.1021/acs.orglett.4c01661
日期:——
Herein we report a strategy for the enantioselective synthesis of spirocycles containing all-carbon quaternary centers via nickel-catalyzed intramolecular addition of lactone enolates to aryl nitriles. The established lactone α-spirocyclization efficiently and enantioselectively forges 5-, 6-, and 7-membered rings, performing best in the synthesis of 7-membered rings (up to 90% ee). This discovery
在此,我们报告了一种通过镍催化内酯烯醇化物与芳基腈的分子内加成来对映选择性合成含有全碳季中心的螺环的策略。所建立的内酯α-螺环化反应有效地、对映选择性地形成5元环、6元环和7元环,在7元环的合成中表现最佳(高达90% ee)。这一发现代表了对映选择性螺环化合成工具包的扩展,为获得手性、药学相关的螺环产品提供了途径。