title: Half-sandwich cycloruthenated complexes from aryloxazolines: synthesis, structures, and catalytic activities.
abstract: Seven half-sandwich cycloruthenated complexes [Ru(p-cymene)LCl] (2a-2g) (L = 2-phenyl-2-oxazoline (2a), 2-p-tolyl-4,5-dihydrooxazole (2b), 4,4-dimethyl-2-phenyl-2-oxazoline (2c), 2-(4-chlorophenyl)-4,5-dihydrooxazole (2d), 2-(4-bromophenyl)-4,5-dihydrooxazole (2e), 2-(4-fluorophenyl)-4,5-dihydrooxazole (2f) and 2-(4-nitrophenyl)-4,5-dihydrooxazole (2g)) were synthesized and characterized. All half-sandwich cycloruthenated complexes were fully characterized by (1)H and (13)C NMR spectra, elemental analyses and infrared spectroscopy. The molecular structures of 2a, 2d and 2e were confirmed by single-crystal X-ray diffraction methods. These half-sandwich cycloruthenated complexes were employed in nitroarene reduction using sodium borohydride (NaBH4) as a reducing agent in ethanol at room temperature. The catalytic results indicate that half-sandwich cycloruthenated complexes show promising catalytic activity in nitroarene reduction with a broad substrate and varied functional group compatibility.
authors.affiliation: College of Chemistry and Materials Science, Center for Nano Science and Technology, The Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecular-Based Materials, Anhui Normal University, Wuhu, 241000, China. wgjiasy@mail.ahnu.edu.cn.
authors.forename: Wei-Guo
authors.initials: WG
authors.lastname: Jia
authors.forename: Tai
authors.initials: T
authors.lastname: Zhang
authors.forename: Dong
authors.initials: D
authors.lastname: Xie
authors.forename: Qiu-Tong
authors.initials: QT
authors.lastname: Xu
authors.forename: Shuo
authors.initials: S
authors.lastname: Ling
authors.forename: Qing
authors.initials: Q
authors.lastname: Zhang