Molybdenum(VI)-complexes with chiral N,O-ligands derived from carbohydrates: synthesis, structure and catalytic properties in asymmetric olefin epoxidation |
| |
Authors: | Jö rg Fridgen,Georg Eickerling,Ana M. Santos |
| |
Affiliation: | a Anorganisch-chemisches Institut der Technischen Universität München, Lichtenbergstrasse 4, D-85747 Garching bei München, Germany b Lehrstuhl für Chemische Physik und Materialwissenschaften, Institut für Physik der Universität Augsburg, Universitätsstrasse 1, 86135 Augsburg, Germany |
| |
Abstract: | Novel chiral 2′-pyridinyl alcohols derived from isopropylidene-protected carbohydrates are reported. They show different characteristics at the hydroxy group, but are all suitable ligands for chiral molybdenum(VI) complexes of the type MoO2L2 (L = chiral 2′-pyridinyl alcoholate). MoO2(acac)2 served as starting material in the complex syntheses. The structure of one ligand and one dioxo complex were exemplary established by X-ray crystallography. For catalytic runs in the enantioselective epoxidation catalysis trans-methylstyrene was used as model substrate, tert-butylhydroperoxide and cumolhydroperoxide, resp., as the oxidant. |
| |
Keywords: | Molybdenum Carbohydrate 2&prime -Pyridinyl alcohol Enantioselective synthesis Asymmetric catalysis Epoxidation |
本文献已被 ScienceDirect 等数据库收录! |
|