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- electrophilic ozonolysis 亲电子臭氧分解
- The second significant characteristic of the ozonolysis reactions concerns the origin of the biradical species. 臭氧分解反应的第二个重要特征与二元基物质有关。
- The preparation of anisaldehyde by ozonolysis reaction from anethole was studied. 以茴香脑为原料,乙酸和环己烷的混合物做溶剂,臭氧化法制备茴香醛。
- It is very difficult to sulfonate PES by electrophilic aromatic substitution reaction. 同时通过改变氯磺酸与聚醚砜的摩尔比,可以对反应进行控制。
- Markovnikov's rule is an important rule of product forecasting in alkene electrophilic addition reaction. 马氏规则是在烯烃的亲电加成反应中预测产物的重要经验规则,然而它通常的表述有一定的局限性。
- Synthesis of the substance from aniline and hexafluoroacetone involves electrophilic addition,acylation and reduction. 其合成一般是以苯胺和六氟丙酮为起始原料,经过亲电加成、酰化和还原三步反应。
- Electrophilic aromatic substitution takes place at C5 requiring Activating groups. 在有活化基的情况下可以在C5发生亲电芳香取代反应。
- 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 rate constants of radical and electrophilic addition to alkenes are dominated by different factors. 烯烃的自由基加成和亲电加成速率受不同的因素控制。
- The result shows that the indirectly measured radical yields for the ozonolysis of ethene may be underestimated by a factor of 2. 这一结果表明以往间接方法可能低估了自由基的产率大约2倍。
- The aromatic electrophilic substitution reaction was studied using NMR for the first time. 首次采用NMR研究芳基亲电取代反应。
- Benzene undergoes metabolic oxidation by cytochrome P450 enzymes to form an electrophilic epoxide which can alkylate protein and DNA. 苯在细胞色素P450酶氧化代谢下,形成一种能烷化蛋白质和DNA的电环氧化物。
- By comparing VNS with the electrophilic substitution and nucleophilic substitution of nitro aromatic, the definition of VNS is explained. 通过对竞比实验、速控步骤和动力学同位素效应的分析,解释了VNS的反应机理;
- When the tautomer DTP(1,3,7) reacts with the electrophilic carcinogen BPDE,the atomic S10 of DTP(1,3,7) superiorly attacks the BPDE. 二硫酮DTP(1;3;7)在水相中与致癌物BPDE进行亲核取代反应时;二硫酮DTP(1;3;7)中的S10原子优先进攻亲电试剂BPDE.
- The treatise advances a new method to judge two kinds of fixed group of benzoic ring on electrophilic substitutive reaction in benzoic ring. 对苯环上的亲电取代反应提出一种判断苯环上两类定位基的新方法。
- Reactivity of electrophilic substitutions of different positions on phenanthrene are discussed according to the theory of Resonance,PMO method and EHMO method. 利用共振论、PMO法、EHMO法;对菲亲电取代反应各位点的活性进行了解释.
- In this paper, bromized polystyrene flame retardant was synthesized by electrophilic substitution of waste polystrene with bromine using aluminium ehlorid as catalyst. 本文利用三氯化铝作催化剂,废聚苯乙烯与溴发生亲电取代反应合成溴化聚苯乙烯阻燃剂。
- When alkene's electrophilic addition reaction is judged through the traditional view of Markovnikov's rule, the asymmetric alkene shoulod contain a hydrogen atom. 用传统意义上的马氏规则判断烯烃的亲电加成反应时,不对称试剂中必须含氢原子,并且烯烃的结构和试剂的构成也有要求,因而有局限性。
- Vicarious nucleophilic substitution (VNS) of hydrogen is a new type of reaction which is differ-ent from the usual electrophilic and nucleophilic reactions of the nitro arenes. 氢的替代亲核取代反应(VNS)是与硝基芳环的亲电反应、亲核反应不同的一种新反应.;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;
- Electrophilic addition and substitution of organoselenoreagents,elimination of seleno group in the molecule andtheir application in the synthesis of natural products werereviewed. 简要综述了有机硒试剂的亲电加成和取代反应,从分子中消去硒基团的方法及其在天然物合成中的应用。