In situ palladium/N-heterocyclic carbene complex catalyzed carbonylative cross-coupling reactions of arylboronic acids with 2-bromopyridine under CO pressure: efficient synthesis of unsymmetrical arylpyridine ketones and their antimicrobial activities
作者:L. Boubakri、Abdullah S. Al-Ayed、L. Mansour、A. A. Harrath、J. Al-Tamimi、I. Özdemir、S. Yasar、N. Hamdi
DOI:10.1007/s11243-018-00298-9
日期:2019.5
The carbonylative Suzuki cross-coupling of 2-bromopyridine with various boronic acids to prepare unsymmetrical arylpyridine ketones has been carried out using palladium/N-heterocyclic carbene complexes as catalysts prepared in situ. The selectivity and the rate of these reactions are highly dependent on the conditions, i.e., nature of the palladium catalyst precursor, solvent, temperature and CO pressure
使用钯/N-杂环卡宾配合物作为原位制备的催化剂,2-溴吡啶与各种硼酸的羰基化铃木交叉偶联制备不对称芳基吡啶酮。这些反应的选择性和速率高度依赖于条件,即钯催化剂前体的性质、溶剂、温度和 CO 压力。主要的副产品来自直接的非羰基化交叉偶联。在最佳条件下,芳基吡啶酮以高收率(60-88%)回收。使用琼脂稀释程序测试了相应的苯并咪唑盐 2 对革兰氏阳性和阴性细菌的抗菌活性,并确定了它们的 IC50 值。