Nickel- and Palladium-Catalyzed Cross-Coupling of Stibines with Organic Halides: Site-Selective Sequential Reactions with Polyhalogenated Arenes
作者:Dejiang Zhang、Ting Tang、Zhao Zhang、Liyuan Le、Zhi Xu、Hao Lu、Zhou Tong、Dishu Zeng、Wai-Yeung Wong、Shuang-Feng Yin、Arash Ghaderi、Nobuaki Kambe、Renhua Qiu
DOI:10.1021/acscatal.1c04533
日期:2022.1.21
disclose a general and efficient method for the synthesis of Sb-aryl and Sb-alkyl stibines by the nickel-catalyzed cross-coupling of halostibines with organic halides. The synthesized Sb-aryl stibines couple with aryl halides to give biaryls efficiently via palladium catalysis. Sequential reactions of stibines with polyhalogenated arenes bearing active C–I/C–Br sites and inactive C–Cl sites successfully
在此,我们公开了一种通过镍催化卤代锑与有机卤化物的交叉偶联来合成 Sb-芳基和Sb-烷基锑的通用且有效的方法。合成的锑-芳基锑与芳基卤化物偶联,通过钯催化有效地产生联芳基。锑与具有活性 C-I/C-Br 位点和非活性 C-Cl 位点的多卤代芳烃的顺序反应成功进行,从而形成了多种具有良好位点选择性的复杂分子。药物如二氟尼柳和芬布芬,以及非诺贝特衍生物,以克级规模合成,收率良好,同时氯噻汀的高回收率。此外,基于对照实验的结果提出了催化机制。