• 表明重排反应立体专一性的。

    This indicates that the rearrangement reaction is stereospecific.

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  • 本文综述了烷氧重排反应

    Rearrangement reactions of alkoxy groups are reviewed.

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  • 结果表明重排反应经过一个三元过渡

    The result shows that the transition state of the rearrangement reaction has a three-membered ring structure.

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  • 方法重排反应

    Method Thermal rearrangement reaction was used.

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  • 结果发现重排反应经过一个三元过渡

    The result shows that the transition state of the rearrangement reaction is a three-member ring structure external the molecular plane.

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  • 重排反应生成己内酰胺机理及反应动力学方程。

    Beckmann rearrangement reaction is that amide is formed by ketoxime under the condition of acid catalyzer.

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  • 精细有机合成反应常见一些分子重排反应进行分析归纳

    On common molecular rearrangement reactions in fine organic synthesis reaction. Made analyses and induce to them.

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  • 而且利用这个重排反应为光学纯度叔亮氨酸制备提供新的方法

    Moreover, this rearrangement reaction provided a new way of preparing enantiomerically pure tert-Leucine.

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  • 在发泡后处理过程分子链发生重排反应生成六元酰亚胺

    Molecular rearrangement reaction was observed during the heat treatment and the formation of hexahydric imide ring was identified.

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  • 作用下不合理堆积导致配体的交换重排反应

    Under weak ligand field interaction, various types of improper packing of ligands will induce lig and exchange and rearrangement.

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  • 重排反应避免直接使用危险性过氧酸,合成工艺安全可行。

    This synthetic method is safer and easily operated due to the avoidance of direct use of hazardous peracid in the rearrangement.

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  • 报道了由苯酚经过乙酰化、化、重排反应合成扑热息痛一种方法

    This paper reports a new process of synthesizing paracetamol from phenol by acetylization, oximation and Beckmann rearrangement.

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  • 本文主要阐述重排反应医药农药天然产物、染料等合成中的应用

    Applications of rearrangement reactions in the pharmaceutics, pesticides, natural products and dyes were reviewed in this paper.

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  • 淀粉原料使与聚丙烯酰胺霍夫曼重排反应产物进行反应而制得。

    Starch as a raw material is grafted on a reaction product which is made by Hofmann rearrangement of polyacrylamide.

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  • 最后研究了4位芳香基取代1H-2,3-苯并恶结构化合物重排反应

    The rearrangement of 4-aryl 1H-2,3-benzoxazine derivatives was investigated.

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  • 合成工作关键9,15丙基形成重建GA骨架a环中双键重排反应

    The key reactions included the formation of 9, 15-cyclopropyl function and double bond migration in the a ring to reestablish the GA skeleton.

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  • 由于贝克曼重排反应机理非常复杂而且反应速率,因此对机理的认识不一致。

    Because the kinetics of Beckmannrearrangement is very complicated and the reaction speed is very fast, the realization of its reaction kinetics is very variant.

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  • 丁醇气体空气混合通过催化剂固定反应,使氧化反应分子重排反应同时进行

    The oxidation and molecular recomposition proceeded in the same time, when the isobutanol gas and air passed the fixed bed catalytic reactor continuously.

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  • 环己-2-丙基金属-克兰荪重排反应,生成2-烯丙基-1,1-二金属环己烷

    Allyl - cyclohexenyl zinc undergoes the metalla - Claisen rearrangement leading to 2 - allyl 1, 1 -Gemdimetallic - cyclohexane.

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  • 体空间堆积效应分析了配体混合重排反应金属体非整数化学组成偶效应现象

    The ligand mixing reaction, the nonintegral metal- ligand ratio in compound compositions, the even-odd effect and related phenomena are analysed in the light of the steric packing of the ligands.

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  • 第三反应器中研究出了一高效绿色的对位取代的苯基烯丙基醚的克莱森重排反应的方法。

    Chapter 3: a new green synthetic platform in a microreactor system to synthesize allyl para-substituted phenyl phenols via Claisen rearrangement in high efficiency has been developed.

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  • 根据传统过渡理论变分过渡态理论相应的隧道效应校正计算了重排反应反应速率常数

    The reaction rate constants have been calculated according to conventional transition state theory, variational transition state theory and tunneling corrections respectively.

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  • 本文研究磺酸化聚苯乙烯树脂酯化酯交换缩醛合成的合成(口)呐重排反应中的应用

    This paper reports the study on the sulfonated polystyrene resin used in esterification, transesterification, synthesis of acetals or ketals, synthesis of ether and rearrangement reaction of pinacol.

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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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  • 本文建立了己内酰胺液相重排反应转位中环己含量测定方法,为环己酮肟液相重排反应动力学的研究奠定了基础

    Method of determination of cyclohexanone oxime concentration in esters gained in liquid phase Beckmann rearrangement is set up in the paper, which is a basis of the above reaction kinetics.

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  • 讨论Hofmann重排反应机理以及烃基结构介质中的亲核试剂反应影响,并介绍了此重排在有机合成中的应用。

    The mechanism of Hofmann rearrangement reaction and the effects of alkyl structure and nucleophilic reagent in medium on the reaction are discussed.

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  • 评述了阳离子型聚合电子重排基团迁移异构化聚合反应机理

    In this paper, the electron rearrangement, group transfer isomerization reactions and mechanism in carbocationic isomerization polymerizations are reviewed in detail.

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  • 反应混合物可以进一步酯化重排制备维生素A中间体1-氯-2-甲基-4-乙酰氧基-2-丁烯。

    The reaction mixture then undergo esterification and rearrangement reaction to prepare 1-chloro-2-methyl-4-(acetyloxy)-2-butene, which is a important intermediate of vitamin A.

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  • 反应混合物可以进一步酯化重排制备维生素A中间体1-氯-2-甲基-4-乙酰氧基-2-丁烯。

    The reaction mixture then undergo esterification and rearrangement reaction to prepare 1-chloro-2-methyl-4-(acetyloxy)-2-butene, which is a important intermediate of vitamin A.

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