Synthesis of Functionalized Indoles via Palladium-Catalyzed Cyclization of N-(2-allylphenyl) Benzamide: A Method for Synthesis of Indomethacin Precursor
作者:Zhe Chang、Tong Ma、Yu Zhang、Zheng Dong、Heng Zhao、Depeng Zhao
DOI:10.3390/molecules25051233
日期:——
We developed an efficient method for synthesis of substituted N-benzoylindole via Pd(II)-catalyzed C–H functionalization of substituted N-(2-allylphenyl)benzamide. The reaction showed a broad substrate scope (including N-acetyl and N-Ts substrates) and substituted indoles were obtained in good to excellent yields. The most distinctive feature of this method lies in the high selectivity for N-benzoylindole
我们开发了一种通过 Pd(II) 催化的取代 N-(2-烯丙基苯基)苯甲酰胺的 C-H 官能化合成取代 N-苯甲酰吲哚的有效方法。该反应显示出广泛的底物范围(包括 N-乙酰基和 N-Ts 底物),并且以良好到优异的产率获得了取代的吲哚。该方法最显着的特点在于对 N-苯甲酰吲哚比苯并恶嗪具有高选择性,这是 Pd(II) 催化合成取代 N-苯甲酰吲哚的第一个例子。值得注意的是,这种新方法被应用于吲哚美辛关键中间体的合成。