Nondirected, Site-Selective Arylation of Quinone Imine Ketals Derived from Arylamines: One-Pot Access to <i>meta</i>-Substituted Anilines
作者:Neha Taneja、Pragya Sharma、Naveen Yadav、Dulal Musib、Chinmoy Kumar Hazra
DOI:10.1021/acs.orglett.3c02181
日期:2023.8.18
Herein, we develop a metal-free, nondirected, site-selective, one-pot approach to meta-arylation of arylamines. This Brønsted acid-catalyzed, direct C–C bond formation offers a broad substrate scope and scalability and creates the ideal conditions for overriding the conventional site-selectivity to furnish meta-substituted anilines. Additionally, the protocol applies to the meta-allylation of anilines
在此,我们开发了一种无金属、非定向、位点选择性、一锅法来进行芳基胺的间芳基化。这种布朗斯台德酸催化的直接 C-C 键形成提供了广泛的底物范围和可扩展性,并为超越传统的位点选择性以提供间位取代的苯胺创造了理想的条件。此外,该方案适用于苯胺的间位烯丙基化,并已扩展到提供药用特殊芳基化二胺和密集官能化苯胺的后期功能化和合成。控制实验和密度泛函理论研究为所提出的机制和选择性提供了证据。