TiIV-Catalyzed Asymmetric Sulfenylation of 1,3-Dicarbonyl Compounds
作者:Marjan Jereb、Antonio Togni
DOI:10.1002/chem.200700920
日期:2007.11.16
The electrophilic enantioselective sulfenylation of 1,3-dicarbonylcompounds with phenylsulfenyl chloride is effectively catalyzed by [Ti(TADDOLato)] complexes. The corresponding products are obtained in moderate to high yields. The highest ee values (up to 97 %) are obtained in toluene at room temperature and with a typical catalyst loading of 5 mol %. Bulky ester groups and sterically undemanding