Ruthenium(Ⅱ)Complexes Bearing Schiff Base Ligands for Efficient Acceptorless Dehydrogenation of Secondary Alcohols

• 作者: Zhiqiang Hao Kang Liu Qi Feng Qing Dong Dongzhu Ma Zhangang Han Guo-Liang Lu Jin Lin
• 来源期刊: 中国化学（英文版）
• 年，卷（期）: 2021,（1）
• 所属期刊栏目: Concise Reports
• 页码范围: 121-128
• 页数: 8页
• 语种: 英文
• DOI: 10.1002/cjoc.202000363

摘要

Four ruthenium(Ⅱ)complexes 1-4[RN=CH-(2,4-(tBu)2C6H2O)]RuH(PPh3)2(CO)(R = C6H5,1;R = 4-MeC6H4,2;R = 4-ClC6H4,3;R =4-BrC6H4,4)bearing Schiff base ligands were prepared by treating RuHClCO(PPh3)3 with RN=CH-(2,4-(tBu)2C6H2OH(L1-L4)in the presence of triethylamine.Their structures were fully characterized by elemental analysis,IR,NMR spectroscopy and X-ray crystal-lography.These Ru(Ⅱ)complexes exhibit high catalytic performance and good functional-group compatibility in the acceptorless de-hydrogenation of secondary alcohols,affording the corresponding ketones in 82％-94％yields.