作者:Zhang, Bo-Sheng、Zhang, Ze-Qiang、Guo, Tian-Jiao、Oliveira, João C. A.、Warratz, Svenja、Deng, Bao-Jie、Wang, Yi-Ming、Zhou, Jun-Shi、Gou, Xue-Ya、Wang, Xi-Cun、Quan, Zheng-Jun、Ackermann, Lutz
DOI:10.1021/acs.orglett.4c01658
日期:——
The direct synthesis of C4-acyl indoles deprived of C2 and C3 substituents has proven to be challenging, with scarce efficient synthetic routes being reported. Herein, we disclose a highly site-selective palladium-catalyzed C–H acylation for the construction of C4-acyl indoles via a Catellani–Lautens cyclization strategy. In addition, we systematically studied the ortho C–H acylation mechanism of iodoaniline
事实证明,直接合成不含 C2 和 C3 取代基的 C4-酰基吲哚具有挑战性,目前报道的有效合成路线很少。在此,我们公开了一种高度位点选择性的钯催化的 C-H 酰化,用于通过 Catellani-Lautens 环化策略构建 C4-酰基吲哚。此外,我们通过密度泛函理论(DFT)计算系统研究了碘苯胺的邻位C-H酰化机理,并结合实验结果阐明了苯甲酸三嗪作为酰化试剂带来的高化学选择性的原理。