Novel Chiral (Salen)MnIII Complexes Containing a Calix[4]arene Unit as Catalysts for Enantioselective Epoxidation Reactions of (Z)-Aryl Alkenes
作者:Maria E. Amato、Francesco P. Ballistreri、Andrea Pappalardo、Gaetano A. Tomaselli、Rosa M. Toscano、David J. Williams
DOI:10.1002/ejoc.200500138
日期:2005.8
New asymmetric (salen)MnIII and UO2 complexescontaining a calix[4]arene unit in the ligand framework were synthesized. The UO2 complexes were characterized by 1H-, 13C-, 2D TOCSY and T-ROESY NMR spectroscopy. Furthermore, the structure of one UO2 complex was determined by single-crystal X-ray analysis. The data showed that UO2 complexes, which can be considered in first approximation models of the