Visible Light instead of Transition Metal: Electron Donor Acceptor Complex Enabled Cross‐Coupling of Aryl Halides with Active Methylene Compounds
作者:Alexey A. Volkov、Dmitry I. Bugaenko、Alexander V. Karchava
DOI:10.1002/adsc.202301192
日期:2024.2.19
An arylation of anions of active methylene compounds with aryl halides provides an access to synthetically versatile α-arylated 1,3-diketones, β-keto esters, β-keto nitriles, β-cyano esters, etc. Previously, these C−C cross-coupling reactions have been accomplished only using transition metal-based catalysts. Herein, we demonstrate that these arylations can be successfully realized under catalyst-free
活性亚甲基化合物的阴离子与芳基卤化物的芳基化提供了合成通用的 α-芳基化 1,3-二酮、β-酮酯、β-酮腈、β-氰基酯等的途径。以前,这些 CC 交叉-偶联反应仅使用过渡金属基催化剂即可完成。在此,我们证明这些芳基化可以在无催化剂条件下采用电子供体-受体(EDA)复合物光活化策略成功实现。该方案进一步优化,用于通过分子内 C−C 偶联半一锅合成吲哚衍生物。