New immobilized chiral Mn(III) salen complexes on pyridine N-oxide-modified MCM-41 as effective catalysts for epoxidation of nonfunctionalized alkenes

被引：89

作者：

Kureshy, RI ^{[1
]}

Ahmad, I ^{[1
]}

Khan, NUH ^{[1
]}

Abdi, SHR ^{[1
]}

Singh, S ^{[1
]}

Pandia, PH ^{[1
]}

Jasra, RV ^{[1
]}

机构：

[1] Cent Salt & Marine Chem Res Inst, Silicates & Catalysis Discipline, Bhavnagar 364002, Gujarat, India

来源：

JOURNAL OF CATALYSIS | 2005年 / 235卷 / 01期

关键词：

enantioselective epoxidation; modified MCM-41; nonfunctionalized alkenes; chiral Mn(III) salen complexes;

D O I：

10.1016/j.jcat.2004.11.002

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We prepared new chiral Mn(III) salen complexes 1'-4' immobilized on pyridine N-oxide-modified MCM-41 through the axial coordination. Epoxidation of styrene and 4-chlorostyrene with the use of these complexes as catalysts in the presence of NaOCl was found to proceed enantioselectively (ee, 62-69%) at 0 degrees C in 8-12 h, which is a significantly higher enantioselectivity than that observed for their homogeneous counterparts (ee, 36-51%). These catalysts were also effective for the relatively bulkier alkenes, such as indene and 2,2-dimethylchromene, and have shown a reactivity (82-98%) and an enantioselectivity (69-92%) similar to those observed for their homogeneous system. The catalysts could be recycled several times without loss of performance. (c) 2004 Published by Elsevier Inc.

引用

页码：28 / 34

页数：7

共 37 条

[31] Axially coordinated chiral salen Mn(III) anchored onto azole onium modified ZnPS-PVPA as effective catalysts for asymmetric epoxidation of unfunctionalized olefins
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Fu, Xiangkai
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DALTON TRANSACTIONS, 2012, 41 (35) : 10661 - 10669
[32] Axially coordinated chiral salen Mn(III) anchored onto azole onium modified ZnPS-PVPA as effective catalysts for asymmetric epoxidation of unfunctionalized olefins (vol 41, pg 10661, 2012)
Huang, Jing
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DALTON TRANSACTIONS, 2021, 50 (23) : 8258 - 8258
[33] Novel chiral (salen) Mn(III) complexes containing a calix[4] arene unit in 1,3-alternate conformation as catalysts for enantioselective epoxidation reactions of (Z)-aryl alkenes
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DALTON TRANSACTIONS, 2014, 43 (05) : 2183 - 2193
[34] Synthesis of Chiral Salen Mn(III) Immobilized on Novel Layered Crysalline Hybrid Support Zinc Poly (styrene-phenylvinylphosphonate)-phosphate as Effective Catalysts and Asymmetric Epoxidation of Unfuntionalized Olefins
Hu Xiao-Yan
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CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE, 2011, 32 (11): : 2605 - 2612
[35] Layered crystalline chiral salen Mn(III) complexes immobilized on organic polymer-inorganic hybrid zinc phosphonate-phosphate as efficient and reusable catalysts for the unfunctionalized olefin epoxidation
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Yuan, Li
Cai, Jiali
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INORGANIC CHEMISTRY COMMUNICATIONS, 2016, 65 : 4 - 8
[36] RETRACTED: Synthesis of a novel type of chiral salen Mn(III) complex immobilized on crystalline zinc poly(styrene-phenylvinylphosphonate)-phosphate (ZnPS-PVPP) as effective catalysts for asymmetric epoxidation of unfunctionalized olefins (Retracted Article)
Huang, Jing
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CATALYSIS SCIENCE & TECHNOLOGY, 2011, 1 (08) : 1472 - 1482
[37] RETRACTION: Synthesis of a novel type of chiral salen Mn(iii) complex immobilized on crystalline zinc poly(styrene-phenylvinylphosphonate)-phosphate (ZnPS-PVPP) as effective catalysts for asymmetric epoxidation of unfunctionalized olefins (Retraction of Vol 1, Pg 1472, 2011)
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CATALYSIS SCIENCE & TECHNOLOGY, 2021, 11 (11) : 3931 - 3931

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