Ruthenium(II) complexes-catalyzed direct oxidation of primary amines to amides using air as oxidant

作     者：Zhiqiang Hao Jinyue Li Hui Xu Zhuohao Jiao Zhihong Ma Jinjin Zhao Jin Lin 

作者机构：Hebei Technology Innovation Center for Energy Conversion Materials and Device Hebei Key Laboratory of Organic Functional Molecules Testing and Analysis Center College of Chemistry and Materials Science Hebei Normal University Shijiazhuang 050024 People's Republic of China School of Pharmacy Hebei Medical University Shijiazhuang 050017 People's Republic of China 

出 版 物：《Polyhedron》 (Polyhedron)

年 卷 期：2025年第279卷

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 070301[理学-无机化学] 

基　　金：The authors gratefully acknowledge the Science Research Project of Hebei Education Department (No. ZD2022110) and the Science and Technology Department of Hebei Province (No. 22567622H) 

主　　题：Catalysis 

摘      要：The catalytic performance of salicylaldimine-based ruthenium carbonyl complexes [ArN = CH(3- t BuC 6 H 3 O)] 2 Ru(CO) 2 [Ar = C 6 H 5 ( 1a ); 4-OMeC 6 H 4 ( 1b ); 4-MeC 6 H 4 ( 1c ); 2,4,6-Me 3 C 6 H 2 ( 1d ); 4-ClC 6 H 4 ( 1e ); 4-BrC 6 H 4 ( 1f )] were explored in aerobic oxidation of aromatic amines to amides in refluxing t BuOH. All the ruthenium complexes 1a-1f showed good catalytic activity to selectivity access to amines and the complex 1f was found to the best catalyst. The present catalytic system is operationally simple and displayed good functional group tolerance. A variety of amides were obtained in 47 %–90 % yields.