Chiral molybdenum(VI) complexes with tridentate Schiff bases derived from S(+)-1-amino-2-propanol: Synthesis, characterization and catalytic activity in the oxidation of prochiral sulfides and olefins
| Autor: | Jaromir Kira, Grzegorz Romanowski |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Aqueous solution
Schiff base 010405 organic chemistry 1-Amino-2-propanol Cyclohexene chemistry.chemical_element 010402 general chemistry 01 natural sciences Medicinal chemistry 0104 chemical sciences Catalysis Styrene Inorganic Chemistry chemistry.chemical_compound chemistry Salicylaldehyde Molybdenum Materials Chemistry Organic chemistry Physical and Theoretical Chemistry |
| Zdroj: | Polyhedron. 117:352-358 |
| ISSN: | 0277-5387 |
| DOI: | 10.1016/j.poly.2016.06.015 |
| Popis: | Seven chiral dioxidomolybdenum(VI) complexes with tridentate Schiff bases were synthesized by monocondensation of S (+)-1-amino-2-propanol with salicylaldehyde and its derivatives. One- ( 1 H, 13 C) and two-dimensional (COSY, gHSQC and NOESY) NMR, IR, CD and UV–Vis spectroscopy were used for detailed characterization of the new molybdenum(VI) compounds. After optimization of the reaction conditions, the catalytic activities of these complexes were tested for the oxidation of olefins, i.e. styrene and cyclohexene, with aqueous 30% H 2 O 2 or tert -butyl hydroperoxide (TBHP) as an oxidant. Moreover, the molybdenum(VI) Schiff base complexes were also able to catalyze the oxidation of prochiral sulfides [PhSR (R = Me, Bz)] to optically active sulfoxides in the presence of aqueous 30% H 2 O 2 . |
| Databáze: | OpenAIRE |
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