期刊
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
卷 -, 期 33, 页码 5207-5214出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ejic.200700368
关键词
ruthenium; N ligands; epoxidation; chiral ligands; atropisomerism
The structural, spectroscopic, and electrochemical characterization and a preliminary catalytic investigation of a family of Ru-II complexes with general formula [Ru(Y)(terpy)(phbox-R)](n+) [where terpy is 2,2':6',2 ''-terpyridine, phbox-R is a C-2-symmetric bidentate oxazoline ligand (R = Et or iPr), and Y is a monodentate ligand], are discussed. The X-ray structure of [RuCl(terpy)(phbox-iPr)](2+) has been solved and confirms, as we described recently, the predicted generation of the less hindered atropisomer, which is determined by the conformation of the stereogenic centers in the bidentate ligand. The catalytic properties of the aquo complexes have been tested in epoxidation reactions, and moderate selectivity for the epoxides is obtained for styrene and trans-stilbene when using PhI(OAc)(2) as co-oxidant. ((C) Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007).
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