• Amines can engage in nucleophile substitution reaction with alky.

    参加卤代烷亲核取代反应

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  • Abstract: Polyvinyl chloride can be made by ethylene, chlorine and catalyst through substitution reaction.

    摘要聚氯乙烯乙烯催化剂取代反应制成。

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  • Quaternarization is an important SN2 nucleophilic substitution reaction; solvent has remarkable effect on it.

    季铵化反应一类重要SN2亲核取代反应溶剂反应的影响很显著

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  • The rearrangement of allylic double bond took placed in the course of these reaction. 6—12 are able to undergo a lot of electrophilic substitution reaction.

    产物是双键经过重排的取代烯丙基二甲基甲氧基硅烷6—10,该产物可进行一系列电取代反应。

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  • This just show that we can get compounds which have anticipative structure through substitution reaction of precursor or by changing the reactive condition of the system.

    说明我们可以通过前驱取代反应通过改变反应体系条件来制备具有预期结构化合物

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  • Aripiprazole in overall yield of 68% was synthesized from 2, 3-dichloroaniline by a three-step nucleophilic substitution reaction in yield of 83%, 91% and 90%, respectively.

    2,3 -二氯苯胺为原料,3步取代反应合成阿立哌唑。3步反应的收率分别为83%,91%90%;收率68%。

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  • Five derivative dyes from the parent dyes were obtained by similar nucleophilic substitution reaction in which five primary amines were employed as the nucleophilic reagent.

    母体染料中位氯原子氨基试剂取代衍生合成了个中位仲七甲川菁染料。

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  • At the same time, discuss about the impact factor to nucleophilicity such as the number of attract electron group, ability of attract electron and the nucleophilic substitution reaction part.

    并且核试剂体积效应、溶剂效应亲核性影响,底物上电子基团数目、吸电子能力电性的影响,以及亲核取代反应的发生部位受哪些因素影响进行探讨

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  • This suggested the possibility that the formation of poly aluminum silicate sulfate was resulted from the substitution reaction of certain portion of the aluminum in the poly aluminum sulfate.

    聚合硅酸硫酸铝硅以与类似结构形态取代聚合硫酸铝中的部分铝而形成的。

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  • Thiophene reacted with bromine and zinc to obtain 3-bromothiophene via substitution and reduction reaction.

    本文以噻吩锌粉依次发生取代还原反应生成3-溴噻吩。

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  • Vicarious nucleophilic substitution (VNS) of hydrogen is a new type of reaction which is different from the usual electrophilic and nucleophilic reactions of the nitro arenes.

    替代取代反应(VNS)硝基芳环反应、亲核反应不同一种反应。

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  • X-ray photoelectron spectroscopy (XPS) indicated that the higher reaction activity of alkyl halide, the more alkyl substitution degree on hydroxyl group of chitosan.

    烷基聚糖进行X射线光电子能谱分析表明随着卤代烷试剂反应活性的增高,发生壳聚糖羟基烷基取代反应增多。

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  • METHODS: Electrophilic substitution, reduction, oxidation and nucleophilic addition reaction were used in the synthesis of title compounds.

    方法:通过取代还原氧化加成等反应得到目的化合物

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  • Moclobelide was synthesized from ethanolamine by nucleophilic substitution and Schotten-Baumann reaction, followed by condensation with an overall yield of 71.2%.

    乙醇胺为起始原料,亲核取代、肖特鲍曼反应缩合反应制得吗氯贝胺,收率可达71.2%。

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  • The effects of reaction temperature, reaction time and amount of NaOH on the degrees of substitution of products were discussed by orthogonal test.

    通过正交实验研究氢氧化钠用量反应温度反应时间取代和反应效率影响

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  • The effects of sodium hydroxide, reaction temperature, reaction time, acrylamide concentration on the reaction efficiency and degree of substitution were studied.

    考察用量、反应温度、反应时间丙烯酰胺浓度反应效率取代的影响。

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  • The key step of the two routes is the reaction of nucleophilic substitution of aromatic amines and -bromo compounds. Generally the produce rate of this reaction is low and the reaction time is long.

    条路线关键一步反应化合物亲核取代反应,一般步反应,并且需要长的反应时间

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  • In this reaction, besides substitution products thiophenol etc, the reduction product benzene is formed.

    反应生成酚等取代产物外,生成。

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  • The influences of reaction temperature and time, the amount of sulfuric acid and water on the degree of substitution were investigated.

    分别考察反应时间、反应温度取代影响

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  • In addition, the catalytic effect of W5 and substitution effect on the reaction mechanisms and reaction barriers have also been considered.

    此外研究了不同取代基和催化剂五羰基合钨反应机理反应位垒影响

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  • Due to the strong electron-withdrawing property of CF3 - group the substitution of ortho-chloro shows a higher probability, implying the in-principle feasibility of the reaction.

    由于此物质CF 3具有吸电子能力,所以其氯更易被取代,这就说明此反应理论上是能够发生的。

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  • The effects of the molar ratio of activated tapioca starch to maleic anhydride, the reaction temperature and reaction time on degree of substitution of esterified starch were examined.

    讨论活化木薯淀粉马来酸酐摩尔反应温度、反应时间酯化淀粉取代影响

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  • Whole effect of the reaction is that the substitution of chlorine for phenolic hydroxy on fluorescein. The reaction mechanism is certificated by the key intermediate found in the work.

    反应结果取了荧光素的羟基,反应机理工作找到关键中间体证实。

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  • The synthesis of metallocene, the effects of substitution in cyclopentadiene ring, reaction medium for synthesis and separation of chiral metallocene have been highlighted.

    重点介绍了金属合成方法及二烯环取代基溶剂合成分离旋金属茂的影响

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  • The risk of reaction using phosgene could be avoided effectively by substitution of triphosgene for phosgene, and application of triphosgene in production with broad prospect was believed by author.

    光气代替光气合成化合物有效消除光气危险性生产具有广泛应用前景

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  • With the reaction of starches and phosphors oxychloride, the swelling of cross linked starch granules was controlled successfully through different degrees of substitution.

    利用淀粉三氯氧磷反应通过控制交联反应程度成功地控制了交联淀粉颗粒膨胀程度并使其停留在不同的溶胀阶段。

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  • With the reaction of starches and phosphors oxychloride, the swelling of cross linked starch granules was controlled successfully through different degrees of substitution.

    利用淀粉三氯氧磷反应通过控制交联反应程度成功地控制了交联淀粉颗粒膨胀程度并使其停留在不同的溶胀阶段。

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