Pyrazole-Mediated C–H Functionalization of Arene and Heteroarenes for Aryl–(Hetero)aryl Cross-Coupling Reactions
作者:Abhishek Kundu、Dhananjay Dey、Subhankar Pal、Debashis Adhikari
DOI:10.1021/acs.joc.1c02234
日期:2021.11.5
available, inexpensive pyrazole molecule to conduct C–C cross-coupling reactions at room temperature via a radical pathway. Using this method, an aryldiazonium salt has been coupled to a wide range of arenes and heteroarenes including benzene, mesitylene, thiophene, furan, benzoxazole to result the corresponding biaryl products. The full reaction mechanism is elucidated along with the crystallographic
在此,我们介绍了一种不含过渡金属的方案,该方案涉及一种市售的廉价吡唑分子,可通过自由基途径在室温下进行 C-C 交叉偶联反应。使用这种方法,芳基重氮盐已与包括苯、均三甲苯、噻吩、呋喃、苯并恶唑在内的多种芳烃和杂芳烃偶联,得到相应的联芳基产物。完整的反应机制与活性引发剂物质的晶体学实验一起阐明。钾稳定的去质子化吡唑控制单电子转移到底物,并作为反应的引发剂。