electrophilic substitution

Predication of Reactive Sites in Electrophilic Substitution of Heterocycles and Mono Substituted Heterocycles by Condensed Fukui Function

Fukui函数在传统杂环及单取代杂环亲电取代反应中的活性部位预测

A new method for calculating atomic charges in molecules and quantitative treatment of the orientation effect of electrophilic aromatic substitution reaction

计算分子中原子净电荷的新方法及芳烃亲电取代反应定位效应的定量处理

It will become deepen to the students'recognization in mechanism of Aryl electrophilic substitution.

这些问题的讨论将深化学生对芳烃亲电取代反应机理的认识.

The electron population on the imino-nitrogen atom is the largest, thus the mercuric acetate should first coordinate with imino-nitrogen atom in the process of the reaction and then subsequent electrophilic substitution takes place in the ortho-position of the.

分子中亚胺氮原子的电荷密度最大，在汞化反应过程中，亚胺氮原子首先与醋酸汞配位，然后再进行邻位亲电进攻，生成邻位汞化产物；

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亲电取代反应。

Some Criterions of the Electrophilic Substitution Reactivity at the Ortho, Para and Meta Position of the Mono-substituted Benzenes

一元取代苯邻、间、对位亲电取代反应活性的几种判据

Study of Reaction of Aromatic Electrophilic Substitution

芳香族亲电取代反应的研究

Advances in Gas-Phase Electrophilic Aromatic Substitution Reaction

气相芳香亲电取代反应研究进展

The chloromethylation reaction consists of electrophilic substitution reaction and nucleophilic substitution reaction, the nucleophilic substitution is the rate-controlling step and the hydroxymethyl cation (+ CH20H) is the really effective electrophile.

氯甲基化反应由亲电取代反应和亲核取代反应组成，亲核取代反应是反应的速率控制步骤，羟甲基碳正离子（+CH2OH）；是真正有效的亲电试剂。

Orientation Effect of the Methoxy on the Reaction of Electrophilic Aromatic Substitution

甲氧基在苯甲醚亲电取代反应的定位作用

The results show that electrophilic substitution could occur between CTP and TPA under the action of toluene p sulfonic acid.

实验结果表明，对苯二甲醛在酸性催化剂的催化作用下与煤沥青发生亲电取代反应；

Studies of Phase Transfer Catalysis in the Electrophilic Substitution ── Relation between the Catalytic Power and the Structure

亲电取代反应中相转移催化剂结构和性能的关系

Studies on Use of NMR for the Aromatic Electrophilic Substitution Reaction

NMR在芳基亲电取代反应中的应用研究

Electrophilic Substitution Locating Index of Aromatic Hydrocarbon and Its Application

芳烃亲电取代定位指数的提出及其应用

By comparing VNS with the electrophilic substitution and nucleophilic substitution of nitro aromatic, the definition of VNS is explained.

将VNS与硝基芳环的亲电反应、亲核反应做比较，阐述了VNS的定义；

Synthesis of bis ( indolyl) methanes via electrophilic substitution reactions of indoles with aromatic aldehydes and ketones catalyzed by aminosulfonic acid was carried out in 23-96% yield at 30~ 38 ° C in EtOH aqueous solution under ultrasound irradiation.

超声辐射下在30～38℃的乙醇水溶液中，氨基磺酸催化吲哚与芳香醛或酮反应合成二吲哚甲烷，产率23～96%。

The Relation between~ 1H-NME δ and Electrophilic Substitution Reaction of Aromatic Hydrocarbon

~1H-NMR化学位移与芳烃亲电取代反应

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

方法：通过亲核取代、还原、氧化、亲核加成等反应得到目的化合物。

Ten sulfo-group containing compound were tested whether they could be used as the phase transfer catalyst ( PT CS) for the electrophilic substitution in the solution of H2O/ CH3COONa-CH3COOH/ ClCH2Cl by measuring the coupling reaction rate constant.

选择了10个含磺酸基团的化合物作为相转移催化剂，测定其在H2O／CH2COOH－CH3COONa／ClCH2Cl体系中的亲电偶合反应速率常数。

The electrophilic reaction of methyl pyropheophorbide-a ( MPP-a) demonstrates that the electrophilic addition reaction and the electrophilic substitution reaction occur on the vinyl group at 3-position and 20-meso-position, respectively.

焦脱镁叶绿酸a甲酯与溴素的亲电反应表明：在3位乙烯基上发生亲电加成反应，而与20位的meso氢则发生亲电取代反应。

As an electrophilic agent, the methyl group of methoxy species can directly attack benzene ring to produce toluene via electrophilic substitution reaction.

甲氧基物种的甲基作为一种亲电试剂，可以直接进攻苯环发生亲电取代烷基化反应生成甲苯。

This paper discusses the relation between the empirical parameter of chemical shifts in carbon-13 NMR spectra and orientation effect in electrophilic substitution.

本文研究了取代苯13C&NMR谱化学位移的经验参数与芳烃取代活性顺序以及亲电取定位效应的关系。

Study on electrophilic aromatic substitution of polydivinylbenzene

聚二乙烯苯的取代反应研究

A simple recognization of the position of the aromatic ring in electrophilic substitution

芳环上亲电取代位置的简易判别法

The study of the activity of aromatic and heteroaromatic compounds towards electrophilic substitution reactions

芳杂环亲电取代活性的研究