- 更多网络例句与醚的相关的网络例句 [注：此内容来源于网络，仅供参考]
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In chapter three, the activating agents of ytterbium have been examined. Barbier-type reaction promoted by ytterbium metal was examined. The experimental results shown that the yield of Barbier reaction of imines with allylic bromide promoted by ytterbium is higher than that of aldehydes and ketones with allylic bromide under the same reaction conditions. In this chapter, the reductive cleavage of Se-Se and S-S bond induced by ytterbium metal was also studied.
首先研究了金属镱的活化剂以及活化方法，接着考察了金属镱促进的Barbier反应及其在合成高烯丙基胺和高烯丙基醇中的应用，以及影响该反应的主要因素；究了金属镱促进的二硫醚和二硒醚的S—S键和Se—Se键的还原断裂，继而与氯代烃，胺基甲酰氯反应生成相应的硫醚，硒醚，胺基甲酸硫代酯和硒代酯。
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A new process for synthesizing wood flour polyether was studied by means of etherealization of wood flour.
对木粉醚化合成木粉聚醚的合成工艺进行进一步研究，找到了一种新的催化剂，考察了各种影响因素对催化反应的影响，获得了较佳工艺条件；并对各种聚醚的粘度进行了测定。
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This paper studied the synthesis and models about the etherification reaction from isoamylene to the tert-amyl methyl ether synthesis.
分析了异戊烯醚化生成甲基叔戊基醚的反应机理及相关的反应动力学模型，以甲醇和乙烯裂解碳五为原料进行醚化反应，分别求得R-E模型、L-H模型的动力学参数。
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At the same time, the importance of donor atoms pertaining to the side chain in the complexation reaction of three lariat azacrown ethers with alkali metal ions has been analyzed through the Fukui function.
同时，利用福井函数，对侧臂在氮基臂式冠醚与碱金属配位过程中的重要性进行了分析，结果表明氮基臂式冠醚的侧臂上供电子原子对整个冠醚分子与金属配位过程中有着十分重要的作用。
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Polyether modified polysiloxane was synthesized by the hydrosilation reaction of hydrogen containing silicone fluidand allyl polyether, using chloroplatinic acid as the catalyst.
以氯铂酸为催化剂，利用含氢硅油与烯丙基聚醚的硅氢加成反应，合成出聚醚改性硅油；然后用乙醇胺进行胺化反应，制成纸张用氨基改性聚醚硅油柔软剂。
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In chapter four, the preperation of ytterbium diiodide was examined. The reductive cleavage of Se-Se bond and S-S bond induced by ytterbium diiodide was investigated. The reaction of diselenides and disulfides with allylic bromide promoted by ytterbium diiodide was also examined. The intermolecular Barbier-type reaction induced by ytterbium diiodide was studied. In the last section of this chapter, the intermolecular reductive coupling of nitriles with azides induced by samarium diiodide was investigated.
第四章，研究了二碘化镱的制备方法，以及二碘化镱作为一种优良的单电子转移试剂在有机合成中的应用：二硒醚的Se--Se键和二硫醚S-S键的还原断裂，及其在合成烯丙基硒醚，硒代酯和烯丙基硫醚，硫代酯中的应用，实验结果表明二碘化镱也能促进分子间的Barbier反应，而文献认为二碘化镱不能促进分子间的Barbier反应；最后研究了二碘化钐促进的叠氮化合物与腈的交叉还原偶联反应，一步高收率地制备脒的方法。
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The catalytic transformation pathway can change to decrease the yield of hydrogen and yield methyl-contained sulfides such as methyl mercaptan, dimethyl sulfide and dimethyl disulfide, but overlarge concentration of methanol would holdback the transformation of isobutyl mercaptan. The transformation of isobutyl mercaptan was favorable if the volume ratio of methanol and benzene was 0.2.The addition of methanol assume certain effect on the catalytic cracking of di-n-butyl sulfide in solvent benzene but without changing the cracking reaction mechanism of di-n-butyl sulfide.
甲醇也可以使异丁硫醇的催化转化路径发生改变降低硫化氢的产率，生成甲硫醇、甲硫醚及二甲基二硫化物等含甲基硫化物，但甲醇的浓度过高会抑制异丁硫醇的转化，在反应体系中当甲醇的体积占到溶剂苯体积的20%时对异丁硫醇的转化较为有利；甲醇的添加对丁硫醚在溶剂苯中的催化裂化有一定影响，但没有改变丁硫醚的裂解反应历程。
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Synthesis of the phenylhydrazone, oxime and semicarbazonederivatives of calix[4]arenesThe reaction of p-formylcalix[4]arenes with phenyl hydrazine,hydroxylamine hydrochloride or semicarbazide hydrochloride afforded thephenylhydrazone, oxime or semicarbazone derivatives of calix[4]arenes,respectively.
酯型杯[4]冠醚的全醚化及性能研究利用氢化钠作为碱，对酯型杯[4]冠醚剩余酚羟基进行烷基化，合成中性杯芳烃酯型冠醚，初步研究了其对金属离子、有机阳离子和中性分子的识别情况，发现其对这些底物缺乏有效作用能力。
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We find that none of these cyclic ethers appear to provide advantages over desflurane or sevoflurane.
我们发现这些环醚类并没有显示出优于地氟醚或七氟醚的地方。
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It was confirmed that the 〓-CCT of phenyl isopropyl ether is formed on the benzene ring rather thanon the etheroxy bond. The 〓-CCT complex is not strong enough to induce charge transfer and converts to CTC because the isopropyl group is separated from the benzene ring by oxygen atom. As a result,〓 can not transfer from isopropyl to form radical in cage. Therefore phenyl isopropyl ether is difficult to undergo dark oxidation.
这是由于苯基异丙醚和异丙醚形成O〓-CCT的部位不同，苯基异丙醚的O〓-CCT形成在苯环上，与异丙基相隔一个氧原子，不足以诱发异丙基电荷转移而转化为CTC，也就不能有氢质子转移和笼式自由基的形成，因此难于发生暗氧化反应。
- 更多网络解释与醚的相关的网络解释 [注：此内容来源于网络，仅供参考]
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ethereality：如醚的性质
ethereal 轻的 | ethereality 如醚的性质 | etherealization 气化
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ethereality：如醚的性质/轻妙/灵妙
ethereal /轻的/象空气的/天上的/ | ethereality /如醚的性质/轻妙/灵妙/ | etherealization /气化/醚化/
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etherealization：气化/醚化
ethereality /如醚的性质/轻妙/灵妙/ | etherealization /气化/醚化/ | etherealize /灵化/使灵妙/化成醚/
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PEEK：聚醚醚酮
聚醚醚 酮(PEEK)材料特性 聚醚醚酮材料的持续温度极高(大约+260℃),还具有极高的刚度和硬度,以及独有的高抗拉强度和抗疲劳强度. 另外耐热不变形性能与化学稳定性俱佳. 当温度达到260℃之前该材料都具有及好的介电性能,
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PEI：聚醚亚胺
因此用耐热性热塑性聚合物来改性EP,不仅能改进EP的韧性,而且不降低EP的刚度和耐热性. 其增韧机理与橡胶增韧相似,但其增韧效果略逊于橡胶增韧. 常用的热塑性树脂有聚醚 (PES)、聚 (PSF)、聚醚 亚胺(PEI)、聚醚酮(PEK)、聚苯醚(PPO)等[8].
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PES：聚醚砜
用于增韧环氧树 脂的热塑性树脂主要有双马来酰亚胺(BMI)、聚醚 砜(PES)、聚砜(PSF)、聚醚酰亚胺(PEI)、聚酰亚胺 (PI)、聚碳酸酯(PC)、聚苯醚(PPO)、聚醚醚酮 (PEEK)等.
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ethereous：醚的
etherealoil 醚油 香精油 | ethereous 醚的 | etherester 醚酯
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etheric：醚的
etherfume 乙醚蒸气 | etheric 醚的 | ethericacid 乙酰乙酸
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etherial：轻的/空气般的/天上的
ethereous /醚的/ | etherial /轻的/空气般的/天上的/ | etheric /醚的/
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crown ethers：冠醚
冠醚 冠醚(crown ethers)是一类分子中具有(OCH2CH2)n重复单元的大环多醚.相当于乙二醇的大环聚合物.因其形状似王冠.故称为王冠醚.冠醚通常采用习惯命名法命名.即在[冠"字前标注成环原子总数.在[冠"字后写出环中氧原子数.例如.15-冠