Ruthenium-catalyzed asymmetric alkene epoxidation with tert-butyl hydroperoxide as oxidant

被引：39
|
作者：
Bhor, S
Tse, MK
Klawonn, M
Döbler, C
Mägerlein, WB
Beller, M
机构：
[1] Univ Rostock, Leibniz Inst Organ Katalyse, D-18055 Rostock, Germany
[2] Bayer AG, D-51368 Leverkusen, Germany
来源：
ADVANCED SYNTHESIS & CATALYSIS | 2004年 / 346卷 / 2-3期
关键词：
asymmetric catalysis; tert-butyl hydroperoxide; epoxidation; homogeneous catalysis; N; O ligands; ruthenium;
D O I：
10.1002/adsc.200303142
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
A ruthenium-catalyzed asymmetric epoxidation of various olefins using tert-butyl hydroperoxide (TBHP) as the oxidant is reported. By applying ruthenium(pyridinebisoxazoline)-(pyridinedicarboxylate) complexes 1 [Ru(pybox)(pydic), 1] as catalysts, aromatic and aliphatic olefins yielded the corresponding epoxides at room temperature in good to excellent yields and enantioselectivities up to 65% ee. Slow addition of the stoichiometric oxidant significantly improved the yield and the chemoselectivity of the reaction.
引用
收藏
页码：263 / 267
页数：5
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