均相不对称氢化反应:技术成熟吗?
本文综述了多相不对称催化氢化反应的最新研究进展。
The research progress in enantioselective hydrogenation catalyzed by heterogeneous catalysts is reviewed.
它对烯烃与取代烯烃的硅氢化反应具有良好的催化活性。
It exhibited good catalytic activity for the hydrosilylation of olefins, such as decene, do-d...
综述了近年来不对称催化氢化反应中固载催化剂的研究进展。
The research progress of supported catalysts for asymmetric catalytic hydrogenation was reviewed.
从发现硼氢化反应以来有机硼试剂就广泛应用于有机合成中。
Organoboron compounds have been proved to be useful reagents in organic synthesis.
本文将锡的氢化反应机理研究的结论应用于分析罐头食品中痕量锡。
This paper reports the application of a conclusion from mechanism study to the trace analysis of tin in tinned foods.
通过硅氢化反应研究硅碳型聚氨酯泡沫塑料有机硅匀泡剂合成工艺条件。
By hydrosilation reaction, the technological conditions for synthesis organosilicon foam stabilizers of polyurethane foams were studied.
叙述了丙二酰氧基硼氢化钠的制备及其原位与烯烃的选择性硼氢化反应。
The preparation of sodium malonyloxyborohydride in situ and its selective hydroboration alkene are described.
报道了海南粗榧新碱类似物芳环的一种反常氢化反应,并提出了可能的反应机理。
Abnormal hydrogenation of an aromatic ring of hainanensine analogue is reported. The possible mechanism for this reaction is provided.
对近年来过渡金属络合物对酮类化合物不对称催化氢化反应研究进展进行了综述。
The recent progress of the ketones in catalytic asymmetric hydrogenation is reviewed in this paper.
对于由动物油生成的可再生柴油来说,在高温高压下动物脂肪与氢气作用发生氢化反应。
For renewable diesel made from animal fat, fats are hydrogenated by reacting the tallow with hydrogen under high pressure at high temperature.
并根据实验数据计算出氢化反应的动力学参数,为放大实验及工业设计提供参考数据。
The kinetic parameters are calculated by the experimental data, which are useful for the scale up test and industrial design.
评述了近年来手性金属配合物催化的前手性羰基化合物的不对称硅氢化反应研究进展。
Recent advances in asymmetric hydrosilylation of prochiral carbonyl compounds catalyzed by chiral transition metal complexes are reviewed in this paper with47 references.
文摘:评述了近年来手性金属配合物催化的前手性羰基化合物的不对称硅氢化反应研究进展。
Abstract: Recent advances in asymmetric hydrosilylation of prochiral carbonyl compounds catalyzed by chiral transition metal complexes are reviewed in this paper with 47 references.
结果表明,温度对氢化反应的异构化影响较大,氢气压力和催化剂浓度对异构化的影响相对较小。
The research showed that temperature affected the isomerism most, then the pressure of hydrogen and the concentrations of catalyst.
第二部分描述了新的手性环状ON NO -型配体的设计合成、表征和在不对称转移氢化反应中的应用。
The second part of this thesis fouses on designed synthesis, characterization of new chiral cyclic ONNO-type ligand and application in asymmetric hydrogenation.
综述了近年来联萘衍生物作为手性配体构成的金属络合物在前手性烯、酮及亚胺的不对称氢化反应中的应用。
In this article, the recent application in recent years of metal complexes composed of binaphthyl derivatives in asymmetric hydrogenation of prochiral alkenes, ketones and imines are reviewed.
不对称催化硼氢化反应是应用广泛且具有工业价值的反应,其中的硼烷还原前手性酮反应有着举足轻重的作用。
Asymmetric hydroboration is a kind of widely applied and valuable reaction, in which borane reduction of prochiral ketones reaction is an important method.
本文综述了手性膦配体及其碳碳双键的不对称催化氢化反应研究和最新进展,并对手性膦配体的设计做了分析和总结。
The paper reviewed the study on the chiral phosphines in asymmetric catalytic hydrogenation and their nearest development. Thedesign of chiral phosphines were also evaluated and summarized.
主要对锗、锡的氢化反应酸度,缓冲溶液的选择,动态线性范围,氧化剂的选择,共存元素的干扰及其消除进行了实验。
The acidity for hydride generation reaction, selection of buffer solution and oxidizer, dynamic linear range, interference from coexistent elements and their elimination were studied.
详细介绍了氢化物发生的反应体系和氢化反应的两种机理,并讨论了氢化物发生法在原子光谱中的应用现状和发展趋势。
The reaction systems of hydride generation and its mechanisms are described in detail. Its application and future development in atomic spectrometry are also discussed.
系统地总结了不对称催化氢化反应的各类手性双膦配体的特点及性能,对于每类配体的最新研究成果进行了较详细的综述。
The characteristics and performances of various kinds of Chiral Biphosphine Ligands in asymmetric catalytic hydrogenation are systematically reviewed with 78 references.
利用氨基乙腈及丙烯腈的亲核加成、氢化反应合成了一种新的不等臂有机多胺化合物2 -氨基乙基-二(3-氨基丙基)胺。
A new inequilateral organic polyamine, 2-aminoethyl-bi(3-aminopropyl)amine, was synthesized by the additional and hydrogenation reaction of aminoacetonitrile with acrylonitrile.
本文以研究二茂铁硅烷的硅氢化反应作为重点,以期通过硅氢化反应来解决二茂铁衍生物作为燃速催化剂在固体推进剂中的迁移问题。
This thesis is focused on the hydrosilylation of ferrocenylsilanes, expecting to solve the problem of migration of ferrocene derivatives as combustion catalyst in solid propellant.
泰伯还谈到了瓶盖内衬垫引起氢化反应(有臭鸡蛋气味)的螺纹瓶盖相关问题,以及用以消除这种气味的铜净化剂可能带来的负面影响。
Taber covers the screwcap-related problems of reduction (bad egg smells) associated with screwcap liners and the possible downside of the copper fining used to avoid the smells.
这些反应增加了不完全燃烧的可能性,更有可能释放未燃尽和光化学活性碳氢化合物到大气中。
These reactions increase the probability of incomplete combustion and are more likely to release uncombusted and photochemically active hydrocarbon compounds into the atmosphere.
通过化学反应,可以产生碳氢化合物。
第二种聚酰亚胺聚合物是芳香族四酸二氢化物与芳香族二异氰酸酯反应生成的。
The second polyimide polymer is prepared with aromatic tetracid dihydride and aromatic diisocyanate.
对待任何冲击的身体反应是相同的:除了抗争,还是抗争,就像人在面对压力是一种名叫氢化皮质酮的激素会冲击我们的神经系统。
The body's response to any threat is the same: fight or flight, as the stress hormone cortisol rushes our systems.
对待任何冲击的身体反应是相同的:除了抗争,还是抗争,就像人在面对压力是一种名叫氢化皮质酮的激素会冲击我们的神经系统。
The body's response to any threat is the same: fight or flight, as the stress hormone cortisol rushes our systems.
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