• 一类重要反应中间体有机合成有着广泛的应用

    The enamine is a type of important reaction intermediate, it has an extensive application in organically synthesize.

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  • GH沉淀回收催化剂同时反应中间体进一步转化成戊二醛。

    The tungstic acid catalyst was recovered by GH deposition agent, and in the meantime the intermediate product was converted to pentanedial.

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  • 环氧环己烷是一类非常重要化学反应中间体有机合成领域有着重要学术价值

    Cyclohexene oxide, one of the most important organic intermediates, has attracted great academic interest in the field of organic synthesis.

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  • 离子有机化学反应过程中一活泼反应中间体对于研究已经有100多年的历史。

    Carbenium ion is an active intermediate state in organic reactions, which has been investigated for over 100 years.

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  • 类化合物尤其是醇类化合物重要反应中间体工业生产药物生产以及日常生活中都有重要用途。

    As an important intermediate of chemical reaction, alcohol, especially secondary alcohol, plays an important in industrial production, medicine synthesis and daily living.

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  • 介绍了利用金属离子配位作用捕获并分离重要有机反应中间体—— 自由基中间体研究方法最新进展

    Methods and recent development of isolation of structurally characterizable alkali, alkaline earth and lanthanide metal ketyl radical complexes were reviewed in the paper.

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  • 芳基氮化合物易于制备黑暗稳定、光照下产生高活性反应中间体等优点而被广泛应用于光亲合标记研究中。

    Aryl azides are by far the most frequently used photoaffinity probes because they can be easily synthesized, as well as being chemically stable in the dark and highly reactive upon photoirradiation.

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  • 种非常容易反应中间体

    This is the very reactive intermediate.

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  • 应用方法组含有两个中间体的自催化反应的模拟数据得到了成功解析

    By using this method, a synthetic data matrix for an autocatalytic reaction with two intermediates has been successfully resolved.

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  • 一种通过生成环状正离子中间体进行的,通过这样的历程进行的加成反应加成

    One is conducted amidst formed cyclic cation intermediate and the reaction thus carried out is known as anti- form addition.

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  • 可以代替剧毒光气硫酸二甲酯作为环境友好有机合成中间体起始物质应用羰基化和甲基化反应中。

    It can be use as an environment-friendly intermediate and starting material for organic synthesis substituting the poisonous phosgene and dimethyl sulfate in carbonylation and methylation reaction.

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  • 硫酸混合物作环合剂制备氟嗪酸中间体方法具有反应条件温和、价格便宜、后处理简单的优点,适用于工业化生产

    Sulfuric acid and acetic anhydride were used as a cyclizing agent to prepare Ofloxacin intermediate. The reaction could be carried out under moderate conditions and facilitate industrial produce.

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  • 讨论由飞激光脉冲所构成飞秒化学及其对化学反应过渡状态中间体研究检测

    This article discusses the femto-chemistry, because it involves femtosecond laser pulses, and its research or monitor into chemical processes of transition state and intermediate.

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  • 反应温度底物浓度中间体形成消失较大的影响。

    The formation and disappearance of intermediates are largely affected by the reaction temperature and substrate concentrations.

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  • 活性中间体稳定越容易形成反应活性就越大

    The more stable an activated intermediate is, the easier the formation is, and the more active the reaction is.

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  • 不同反应时间样品IRXRD谱图分析表明,富铁酸钴通过中间体绿锈形成的。

    The samples obtained at different intervals during reaction were characterized by XRD and IR. The cobalt-bearing ferrites were produced through the green-rust intermediate phase.

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  • 减压渣油胶质反应特点:初次反应较低分子质量产物,高芳碳率的产物结合形成中间体产物,然后进一步缩合焦炭

    The characteristics of the coke produced of the heavy resin thermal reaction is that high aromaticity products form intermediate products and then condense to coke in low molecular weight products.

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  • 以苯并噻唑原料,通过工艺研究,合成生产化学除草剂苯草胺的中间体2 -氯代苯并噻唑,分析实验结果表明,反应收率高,产物纯度

    The synthesis of 2_Chlorobenzolthiazole, which can be used as intermediate in the manufacture of herbicide named as Mefenacet with high yield and purity, was reported in this paper.

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  • 反应机理推测为丝、苏氨酸的侧链基团羟基咪唑存在下亲核进攻原子形成五配位中间体

    Only N-phosphoryl serine and threonine methyl esters were catalyzed by imidazole, A new type of pentacoordinate phosphorus intermediate was proposed.

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  • 结果证实种种分子重排反应,总是趋向生成结构稳定的碳正离子负离子或自由基中间体及其产物

    Their result affirm: in all sorts of molecular rearrangement reactions, anyway tend to produce more stable carbocation, or carboanion, or free radical middle substance and their products.

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  • 第二金属催化条件下,使第一步产物缩水甘油发生加成反应生成双子表面活性剂中间体低聚二醇。

    The second step, the digomeric glycol-intermediate product of Gemini. surfactant was prepared by opening ring reaction of glycide ether in the presence of potassium as catalyst.

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  • 碳烯硅烯属于碳化物硅化物中的反应活性中间体。两者甚为相似

    Carbene and silylene are two kinds of reactive activity intermediates which belong to carbide and silicide separately, but they are quite similar.

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  • 乙腈溶剂中,碳酸钾存在下,咪唑啉1,2-二溴乙烷进行扩环反应,得到环状中间体率78。

    The reaction of bis-imidazoline with 1,2-dibromoethane and potassium carbonate in acetonitrile provided monobromide salt with a yield of 78.

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  • DMF-四乙基溴化TEAB)质子惰性介质中,马蔺子素连续电子还原生成相应氢阴离子,中间体半醌自由基化学反应发生

    In DMF tetraethyl ammonium bromide(TEAB) media, the reduction of irisquinone was two successive single electron processes without the chemical reaction of the free radical semiquinone.

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  • 间歇反应过程精细化工催化剂制备染料中间体行业应用广泛

    The batch process has been widely applied in many industries such as the fine chemical industry, the catalyst preparation and the dye intermediates preparation, etc.

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  • 同时,催化“一法”反应较高的收率合成了关键中间体2-乙酰茚衍生物

    The key inter- mediate 2-acetylindene compounds were synthesized by one-pot palladium-catalyzed reaction in goody.

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  • 一系列反应条件温和较高中间体产物纯化处理较容易

    The above mentioned reactions could take place under mild conditions, the yields were high, and the products were purified easily.

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  • 本文三个例子,分别介绍量子化学方法求得有机反应中间体过渡反应途径方法。

    Three examples are cited for illustration of theoretical methods used by the present authors for calculating the intermediate, transition state and reaction path of organic reaction.

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  • 本文三个例子,分别介绍量子化学方法求得有机反应中间体过渡反应途径方法。

    Three examples are cited for illustration of theoretical methods used by the present authors for calculating the intermediate, transition state and reaction path of organic reaction.

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