Synthesis of CF<sub>3</sub>-Containing Spirocyclic Indolines via a Red-Light-Mediated Trifluoromethylation/Dearomatization Cascade
作者:Liangyong Mei、Jules Moutet、Savannah M. Stull、Thomas L. Gianetti
DOI:10.1021/acs.joc.1c01313
日期:2021.8.6
Umemoto’s reagent has been developed. This protocol provides a facile and efficient approach for the construction of functionalized and potentially biologically important CF3-containing 3,3-spirocyclic indolines with moderate to high yields and excellent diastereoselectivities under mild conditions. The success of multiple gram-scale (1 and 10 g) experiments further highlights the robustness and practicality
已经开发了红光介导的n Pr-DMQA +催化级联分子内三氟甲基化和吲哚衍生物与 Umemoto 试剂的脱芳构化。该协议为构建功能化且具有潜在生物学重要性的 CF 3 3,3-螺环二氢吲哚提供了一种简便有效的方法,在温和条件下具有中等至高产率和优异的非对映选择性。多个克级 (1 和 10 g) 实验的成功进一步突出了该协议的稳健性和实用性以及使用红光的优点。机理研究支持形成关键的 CF 3自由基物种和脱芳基苄基碳正离子中间体。