Hydrogenation of Ketones on Platinum:Origin of Enantioselection

机译：铂上酮的氢化：对映体的起源

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1.Introduction Among the various approaches forwarded in heterogeneous asymmetric catalysis, the simplest and synthetically most attractive method is the addition of a chirai molecule -the "modifier" -to a (supported)metal catalyst[1]. There are obvious analogies between a chirally modified metal surface where the strongly adsorbed modifier provides the chiral environment for the transformation of the substrate and a soluble transition metal complex possessing ligands as the source of chiral information. The former system is, however, more complex and structurally less defined. The modifier interacts with not one single metal atom but an ensemble of surface metal atoms. In addition, the metal surface imposes considerable geometric constraint for the modifier-substrate interaction and no truly in situ spectroscopic investigation is yet possible to support a mechanistic concept.

机译：1.介绍在非均相不对称催化的各种方法中，最简单和合成最有吸引力的方法是在（负载的）金属催化剂中加入手性分子-“修饰剂” [1]。在手性修饰的金属表面（其中强吸附的改性剂提供用于底物转化的手性环境）与具有配体作为手性信息来源的可溶性过渡金属络合物之间存在明显的类比。但是，前一个系统更复杂，结构上也不太明确。改性剂不仅与单个金属原子相互作用，而且与一组表面金属原子相互作用。另外，金属表面对改性剂-底物的相互作用施加了相当大的几何约束，并且还没有真正的原位光谱研究来支持机理的概念。

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《18th International Symposium on Fine Chemistry and Functional Polymers,4th IUPAC International Symposium on Novel Materials and Their Synthesis(第18届国际精细化学和功能高分子学术讨论会暨第四届IUPAC 国际新型材料及其制备学术讨论会）》|2008年|20-21|共2页
会议地点 Zhenjiang(CN);Zhenjiang(CN);Zhenjiang(CN);Zhenjiang(CN)
作者
Tamas Mallat; Alfons Balker;
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作者单位

Department of Chemistry and Applied Biosciences,ETH Zurich,Honggerberg,CH-8093 Zurich,Switzerland;

Department of Chemistry and Applied Biosciences,ETH Zurich,Honggerberg,CH-8093 Zurich,Switzerland;

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原文格式 PDF
正文语种 eng
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关键词
asymmetric; hydrogenation; ATR-IR spectroscopy; theoretical calculations;

机译：不对称加氢ATR-IR光谱理论计算;

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机译：在辛可尼定修饰的铂催化剂上对活化酮进行对映选择性加氢的速率提高的起源的其他数据
2. Origin of the rate acceleration in enantioselective hydrogenation of alpha-functionalised ketones over cinchona alkaloid modified platinum [J] . Angelo Vargas, Thomas Burgi, Alfons Baiker New Journal of Chemistry . 2002,第7期

机译：金鸡纳生物碱改性铂上α-官能化酮的对映选择性加氢速率加速的起源
3. Mechanism of enantioselection in Rh-catalyzed asymmetric hydrogenation. The origin of utmost catalytic performance [J] . Ilya D. Gridnev, Tsuneo Imamoto Chemical Communications . 2009,第48期

机译：对映体在Rh催化的不对称氢化中的作用机理。最高催化性能的起源
4. Hydrogenation of Ketones on Platinum:Origin of Enantioselection [C] . International symposium on fine chemistry and functional polymers . 2008

机译：铂金酮的氢化：对映射的来源
5. Mechanistic investigations of trans-ruthenium-(diphosphine)hydrogen(diamine) ketone hydrogenation catalysts [D] . Hamilton, Robin James 2008

机译：反式钌-（二膦）氢（二胺）酮加氢催化剂的机理研究
6. Origin of synergistic effects in bicomponent cobalt oxide-platinum catalysts for selective hydrogenation reaction [O] . Jiankang Zhang, Zhe Gao, Sen Wang, -1

机译：双组分氧化钴-铂催化剂中选择性加氢反应的协同效应起源
7. Asymmetric Reactions Catalyzed by Chiral Metal Complexes. LII. The origin of the enantioselection in the ruthenium(II)-catalyzed asymmetric hydrogenation of .ALPHA.,.BETA.-unsaturated carboxylic acid. [O] . Kiyoshi YOSHIKAWA, Masanao MURATA, Naoko YAMAMOTO, 1992

机译：手性金属配合物催化的不对称反应。刘。钌（II）中对映射的起源 - α-α，。β-不饱和羧酸的催化氢化。

Hydrogenation of Ketones on Platinum:Origin of Enantioselection

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