borane
英
美
n. ***，甲***，硼氢化合物
复数：boranes
双语例句
- The researchers worked together to develop a method of recycling the ammonia borane by reintroducing hydrogen to the chemical hydride.
但***氨的缺点是一旦释放出氢之后就很难对其进行循环使用，不过研究者们开发出了一种能令***氨重新吸收氢的方法。 - Asymmetric hydroboration is a kind of widely applied and valuable reaction, in which borane reduction of prochiral ketones reaction is an important method.
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***还原前手性酮反应有着举足轻重的作用。 - Elementary reaction pathways of the reductants such as dimethylamine borane, hypophosphite ion, formaldehyde, and titanium trichloride were quantitatively examined in terms of the heat of reaction.
一些基本的化学反应如：二苯胺***、次磷酸离子、甲醛以及三氯化钛通过计算反应热来定量描述。 - Thus we cooperate to study the function and mechanism of this catalyst in the asymmetric borane reduction reaction, and the following results are obtained.
于是，我们和其合作来深入研究该类配体的不对称催化机制和功能，得到了如下有意义的结果。 - The asymmetric reduction of ketosulfone with borane catalyzed by oxazaborolidine is computed by means of the semi-empirical MNDO method.
对恶唑***催化前手性酮砜不对称还原反应进行了半经验MNDO研究。 - Ab Initio Studies on Some Borane Ions and Their Derivatives
一些***离子及其衍生物的理论研究 - Both stereo effect and electron effect of borane on the activity of ethylene polymerization were investigated.
我们研究了硼化物的体积效应和电子效应对茂金属催化体系聚合活性的影响。 - The poly ( p phenylene borane) and poly ( m phenylene borane) are synthesized by the modified organometallic route.
用改进的有机金属路线合成了聚对亚苯基硼和聚间亚苯基硼。 - Asymmetric borane reduction of prochiral ketones is a good process to the synthesis of enantiomerically enriched secondary alcohols.
***对前手性酮的不对称还原是合成手性仲醇的重要方法。 - S: Boron substituted polyaromatic mesophase was prepared by co pyrolysis of a coal tar pitch with pyridine borane complex under autogeneous pressure.
以煤焦油沥青和吡啶***为原料采用加压热缩聚工艺制备硼取代聚芳烃中间相沥青。 - Analysis of Organometallic Compounds ⅳ. Thin-Layer Chromatography of Borane Anion Ferrocene Quaternary Ammonium Salts
金属有机化合物的分析Ⅳ&***阴离子二茂铁季铵盐的薄层色谱研究 - Studies on boron compounds& ⅹⅳ. synthesis of phenylalanine rare earth metal(ⅲ) polyhedral borane chelates and their properties
硼化合物的研究&ⅩⅣ.闭式氢硼酸苯丙氨酸合稀土金属（Ⅲ）螯合物的合成和性质研究 - The catalyst is a twisted chair structure and reacts with borane at the N site of the catalyst to form catalyst borane adduct. The formation reaction is exothermic.
催化剂具有扭曲的椅式构型，与***在N原子处配位形成加合物，反应是放热的。 - Studies on boron compounds(ⅳ)-syntheses and properties of borane anion ammonium salts
硼化合物的研究（Ⅳ）&***阴离子铵盐的合成与性质 - Coal tar pitch was modified by adding pyridine borane. The effect of reaction conditions on the properties and components of modified pitches was investigated.
以吡啶***为添加剂对煤焦油沥青进行改性，考察了工艺条件（硼添加量，反应温度，反应时间）对改性沥青软化点、残炭值及其族组成的影响。 - Boron substituted mesophase pitches were synthesized by co pyrolysis of different coal tar pitches with pyridine borane complex.
以三种不同的煤焦油沥青为原料，分别与吡啶***反应制备了硼取代中间相沥青。 - Progress in the Metallocene/ Borane Catalytic System for Olefin Polymerization
茂金属/硼化合物烯烃聚合催化体系研究进展 - Compared with the pure pitches, pyridine borane modified pitches had higher softening points, carbon yields and PI fraction content at the same reaction conditions.
在同一反应条件下，体系有无吡啶***，所得结果有显著差别。吡啶***改性系列的软化点、残炭值及PI组份的含量均明显高于纯沥青系列。 - At the same time. the stabilities of borane skeletons B_n and closo boranes B_nH_n~ ( 2-) have also been discussed.
同时，讨论了骨架Bn及BnHn~（2-）的稳定性。 - Study of reactivity between different coal tar pitches and pyridine borane
不同煤焦油沥青与吡啶***反应性能的比较 - In the early 2002, asymmetric catalytic activity of chelated chiral borate esters, which possess three B-0 bonds and one B ← N coordination bond, toward borane reduction of prochiral ketones was first observed by our research group.
2002年初，本研究组在国内外首次观察到具有三个硼氧键和一个氮硼配键的螯合手性硼酸酯对前手性羰基化合物***还原显示出不对称催化活性； - Crystal and Molecular Structure of Ethanolamine Tri ( 2-furyl) borane
乙醇胺合三（2－呋喃基）***的分子和晶体结构 - The Reaction of Diethylamine Tri ( 2-benzothiazolyl) Borane in EI-MS
二乙胺合三（2-苯骈噻唑基）***在电子电离质谱中的反应 - The other is the process in which the monomer containing "reactive group" is grafted at the end of polyolefine molecular chain, acting as a chain transfer agent, such as borane, para-methyl styrene, silane and alkyl zinc etc.
二是含反应性基团的单体接入聚烯烃分子链末端起链转移剂作用，这类链转移剂有***、p-MS、硅烷和烷基锌等。 - We also studied the asymmetric borane reduction of prochiral ketone catalyzed by a series of thiazolidine ligands.
本文考察了由L-半胱氨酸衍生的2-位无取代基的以及2-位芳基取代的噻唑烷酸及醇配体在前手性酮的不对称还原反应中的催化性能。 - In the transition states of hydrogen atom from the borane moiety to the carbonyl carbon of aromatic ketone, there is a 6 membered B-N-B-H-C-O ring in a twisted chair structure.
在氢的转移过渡态中，存在一个BNBHCO六元环，该六元环具有扭曲的椅式结构； - Structural rule of borane and hetero-borane cluster compounds
***及杂***簇合物的结构规则 - The emphasis is put on the discussion of bondings of boranes on the basis of interactions between borane skeletons and coordinated hydrogens.
着重从***骨架和配位氢相互作用观点讨论了***的成键。 - Studies on boron compounds& ⅹⅹ. synthesis and conversion of ethanolamine tri ( 2-furyl) borane
硼化合物的研究&XX.乙醇胺合三（2-呋喃基）***的合成及其转化