کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
68848 48524 2007 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Asymmetric oxidation of sulfides with H2O2 catalyzed by titanium complexes with aminoalcohol derived Schiff bases
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
پیش نمایش صفحه اول مقاله
Asymmetric oxidation of sulfides with H2O2 catalyzed by titanium complexes with aminoalcohol derived Schiff bases
چکیده انگلیسی

Sulfoxidation catalysts generated in situ from titanium(IV) isopropoxide and enantiopure Schiff bases promote the enantioselective oxidation of alkyl aryl sulfides to the corresponding sulfoxides at low catalyst loadings (<1 mol%), 30% aqueous hydrogen peroxide being the terminal oxidant. Upon screening of several ligands derived from β-aminoalcohols and salicylaldehydes, a catalyst affording sulfoxides with over 90% chemoselectivity and up to 60% ee was found, and the kinetics of the catalytic reaction was analyzed by 1H NMR.

Sulfoxidation catalysts generated in situ from titanium(IV) isopropoxide and enantiopure Schiff bases promote the enantioselective oxidation of alkyl aryl sulfides to the corresponding sulfoxides with over 90% chemoselectivity and up to 60% ee at low catalyst loadings (<1 mol%), 30% aqueous hydrogen peroxide being the terminal oxidant. Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Molecular Catalysis A: Chemical - Volume 264, Issues 1–2, 1 March 2007, Pages 280–287
نویسندگان
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