Recyclable heterogeneous palladium-catalyzed carbonylative Sonogashira coupling under CO gas-free conditions
作者:Zebiao Zhou、Jianying Li、Zhaotao Xu、Mingzhong Cai
DOI:10.1080/00397911.2020.1762092
日期:2020.7.2
Abstract A convenient, efficient and practical heterogeneous palladium-catalyzed carbonylative Sonogashiracoupling of aryl iodides with terminal alkynes under CO gas-free conditions has been developed by using an MCM-41-supported bidentate phosphine palladium acetate complex as catalyst. Here, formic acid was used as the CO source with dicyclohexylcarbodiimide (DCC) as the activator and a wide variety
摘要 以MCM-41负载的双齿膦乙酸钯配合物为催化剂,开发了一种方便、高效、实用的多相钯催化羰基化Sonogashira偶联芳基碘与末端炔烃在无CO气体条件下的反应。在这里,甲酸用作 CO 源,二环己基碳二亚胺 (DCC) 作为活化剂,并以中等至高产率生成了多种炔基酮。这种多相钯催化剂可以通过简单的过滤过程轻松回收,最多可循环使用 8 次,而不会明显降低活性。图形概要
Palladium-Catalyzed Carbonylative Sonogashira Coupling of Aryl Bromides via <i>tert</i>-Butyl Isocyanide Insertion
作者:Ting Tang、Xiang-Dong Fei、Zhi-Yuan Ge、Zhong Chen、Yong-Ming Zhu、Shun-Jun Ji
DOI:10.1021/jo4001096
日期:2013.4.5
A simple and efficient palladium-catalyzed carbonylative Sonogashiracoupling via tert-butyl isocyanide insertion has been developed, which demonstrates the utility of isocyanides in intermolecular C–C bond construction. This methodology provides a novel pathway for the synthesis of alkynyl imines which can undergo simple silica gel catalyzed hydrolysis to afford alkynones. The approach is tolerant
A practical, convenient, and efficient palladium-catalyzedcarbonylativeSonogashira reaction of aryl iodides was developed. With formic acid as the CO source and dicyclohexylcarbodiimide as the activator, various alkynones were produced in good to excellent yields.
开发了一种实用、方便、高效的钯催化芳基碘化物羰基化 Sonogashira 反应。以甲酸为 CO 源,二环己基碳化二亚胺为活化剂,以良好至极好的收率生产了各种炔酮。