Design and characterisation of new organometallic based catalysts heterogenised on immobilised microporous materials
固定化微孔材料多相化新型有机金属催化剂的设计与表征
基本信息
- 批准号:193640454
- 负责人:
- 金额:--
- 依托单位:
- 依托单位国家:德国
- 项目类别:Research Grants
- 财政年份:2011
- 资助国家:德国
- 起止时间:2010-12-31 至 2013-12-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
The goal of this research proposal is the synthesis of (chiral) Re(VII), Mo(VI) and W(VI) based complexes. First, it is planned to synthesise ansa-bridged trioxorhenium(VII) complexes with aromatic N-donor ligands. Aromatic N-donor ligands proved to be the best additives for enhancement of the catalytic activity of methyltrioxorhenium so far. As an added benefit, chirality could be introduced in several positions of the phenyl group, or, closer to the metal centre on the ansa bridge or the aromatic ligand, fixed to the metal by the ansa bridge. The catalyst molecules leading to the highest enantiomeric excess could be further derivatised and optimised. Additionally, chiral Mo and W complexes will be prepared. All synthesised compounds will be tested as catalysts of olefin epoxidation, applying several different olefins, e.g. cyclooctene, and 1-octene, but also compounds with prochiral olefin carbons, such as styrene, α-pinene, limonene, camphene etc. Additionally, the synthesis and immobilisation of new molecular catalysts to surfaces with sufficiently high loadings and without significant leaching is intended, with the goal of finding a route to produce highly active catalysts, which can easily be recycled and which are applicable for a variety of prochiral substrates to yield the intended products with good selectivity. It is further planned to study and monitor the following processes with the most advanced infrared (IR) and Raman spectroscopic methodologies: i) the heterogenisation process of metal complexes on immobilised surfaces of modified microporous and mesoporous materials, ii) the way of grafting and the nature of the support after grafting, iii) the confirmation of the successful grafting of the complexes, iv) the judgment about stability, selectivity and activity of catalysts based on molecular structural studies and detection of changes after several catalytic runs by infrared, Raman spectroscopy end emission FT-IR, with special respect to very modern FTIR imaging methods.
本研究计划的目标是合成(手性)Re(VII)、Mo(VI) 和 W(VI) 基配合物。首先,计划合成具有芳香族N-供体配体的柄桥三氧铼(VII)配合物。芳香族氮供体配体被证明是迄今为止增强甲基三氧铼催化活性的最佳添加剂。作为一个额外的好处,可以在苯基的多个位置引入手性,或者更靠近安萨桥或芳香配体上的金属中心,通过安萨桥固定到金属上。可以进一步衍生和优化导致最高对映体过量的催化剂分子。此外,还将制备手性Mo和W配合物。所有合成的化合物都将作为烯烃环氧化催化剂进行测试,应用几种不同的烯烃,例如环辛烯和 1-辛烯,以及具有前手性烯烃碳的化合物,例如苯乙烯、α-蒎烯、柠檬烯、莰烯等。此外,还旨在以足够高的负载量将新型分子催化剂合成并固定在表面上,并且不会发生明显的浸出,目的是找到一种生产高活性催化剂的路线,该催化剂可以很容易地 可回收利用,适用于各种前手性底物,以良好的选择性产生目标产物。进一步计划利用最先进的红外(IR)和拉曼光谱方法研究和监测以下过程:i)金属配合物在改性微孔和介孔材料固定化表面上的异质化过程,ii)接枝方式和接枝后载体的性质,iii)配合物成功接枝的确认,iv)稳定性、选择性和活性的判断 基于分子结构研究和通过红外、拉曼光谱末端发射 FT-IR 多次催化运行后的变化检测,特别是非常现代的 FTIR 成像方法,对催化剂进行了研究。
项目成果
期刊论文数量(5)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Synthesis and Characterization of Dioxidodiphenylrhenium(VII) Propionate
二氧化二苯基丙酸铼(VII)的合成与表征
- DOI:10.1002/ejic.201100919
- 发表时间:2012
- 期刊:
- 影响因子:2.3
- 作者:S. Huber;M. Cokoja;M. Drees;W. A. Herrmann;F. E. Kühn
- 通讯作者:F. E. Kühn
Xylyltrioxorhenium – the first arylrhenium(VII) oxide applicable as an olefin epoxidation catalyst
二甲苯基三氧铼 – 第一种适用于烯烃环氧化催化剂的芳基铼(VII)氧化物
- DOI:10.1039/c2cy20371e
- 发表时间:2013
- 期刊:
- 影响因子:5
- 作者:S. Huber;M. Cokoja;M. Drees;J. Mink;W. A. Herrmann;F. E. Kühn
- 通讯作者:F. E. Kühn
Synthesis, characterization and application of organorhenium(vii) trioxides in metathesis reactions and epoxidation catalysis.
三氧化二有机铼的合成、表征及其在复分解反应和环氧化催化中的应用
- DOI:10.1039/c8dt02326c
- 发表时间:2018
- 期刊:
- 影响因子:4
- 作者:Florian Dykhoff;Robert Reich;Benjamin Hofmann;Eberhardt Herdtweck;Fritz E. Kühn
- 通讯作者:Fritz E. Kühn
Schiff base complexes of methyltrioxorhenium (VII): Synthesis and catalytic application
- DOI:10.1016/j.jorganchem.2013.04.033
- 发表时间:2013-09
- 期刊:
- 影响因子:2.3
- 作者:Bo Zhang;Su Li;E. Herdtweck;F. E. Kühn
- 通讯作者:Bo Zhang;Su Li;E. Herdtweck;F. E. Kühn
Benzimidazolic complexes of methyltrioxorhenium(VII): Synthesis and application in catalytic olefin epoxidation
甲基三氧铼(VII)苯并咪唑配合物的合成及其在催化烯烃环氧化中的应用
- DOI:10.1016/j.jorganchem.2012.11.006
- 发表时间:2013
- 期刊:
- 影响因子:2.3
- 作者:B. Zhang;F. E. Kühn
- 通讯作者:F. E. Kühn
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Professor Dr. Fritz E. Kühn其他文献
Professor Dr. Fritz E. Kühn的其他文献
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{{ truncateString('Professor Dr. Fritz E. Kühn', 18)}}的其他基金
Darstellung und Einsatz von Metallkationen mit nicht koordinierenden Gegenionen als Polymerisationsinitiatoren
具有非配位抗衡离子的金属阳离子作为聚合引发剂的代表和用途
- 批准号:
5425001 - 财政年份:2004
- 资助金额:
-- - 项目类别:
Research Grants
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