Selective oxidation of alcohols with hydrogen peroxide catalyzed by hexadentate binding 8-quinolinolato manganese(III) complexes |
| |
| Authors: | Zhengpei Ye Zaihui Fu Sheng Zhong Fang Xie Xiaoping Zhou Fenglan Liu Dulin Yin |
| |
| Affiliation: | 1. Crop Protection Chemicals, Indian Institute of Chemical Technology, Hyderabad 500 007, India;2. Natural Product Chemistry, Indian Institute of Chemical Technology, Hyderabad 500 007, India;1. Department of Pharmacological Sciences, Stony Brook University, Stony Brook, NY 11790, USA;2. Division of Rheumatology, Immunology and Allergy, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115, USA;1. College of Biotechnology and Pharmaceutical Engineering, Nanjing University of Technology, Nanjing 211816, China;2. School of Chemistry & Environmental Engineering, Jiangsu University of Technology, Changzhou 213001, China |
| |
| Abstract: | A series of hexadentate 8-quinolinolato manganese(III) complexes were synthesized and proven to own a distorted octahedral geometry via elemental analysis, solid UV–vis spectroscopy and Hartree–Fock/3-21G+ calculation. These Mn(III) complexes were found to be more efficient than their corresponding tetradentate 8-quinolinolato manganese(II) and salen-MnIIIOAc for the oxidation of alcohols in acetone medium, being due to their special hexadentate binding structures that could open an axial Mn O bond to form the more active pentadentate structures in the presence of aqueous hydrogen peroxide, as supported by UV–vis spectra. The halogen substituents in ligand's aryl ring could significantly enhance the catalytic activities and 5-chloro-7-iodo-8-quinolinolato manganese(III) gave the highest turnover number (TON). A reasonable mechanism for the present catalytic system was proposed. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
