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- nucleophilic subatitution 亲核取代
- The first is extremely resistant to nucleophilic reagents. 前者极端地阻抗亲核试剂。
- Many groups can be added by nucleophilic substitution on a diazonium salt. 许多基团可通过向得自胶的重氮盐作亲核取代而加以导入。
- The carbon should be susceptible to attack by a nucleophilic species. 碳容易被亲核试剂进攻。
- A stepwise nucleophilic displacement involving 36 was highly unlikely. 涉及36的这种逐步亲核取代是不大可能的。
- Abstract Quaternarization is an important SN2 nucleophilic substitution reaction;solvent has remarkable effect on it. 摘要 季铵化反应是一类重要的SN2亲核取代反应，溶剂对该反应的影响很显著。
- A series of various thioether moiety content PEEKK copolymers were synthesized through nucleophilic substitution route. 首先将通过亲核取代反应制备了一系列不同硫醚含量的聚合物，以及硫醚含量相同但连接方式不同的聚合物，结构表征证明这些聚合物具有相近的分子量。
- The formate activates the carboxylic acid and functions as a source of nucleophilic alkoxide. 羧酸甲酸激活的职能和核醇源泉.
- Aromatic compounds are easy to take place nucleophilic addition and nucleophilic substitution. 带有吸电子基团的芳环容易与亲核试剂发生亲核加成或亲核取代反应。
- The nucleophilic ability of the amines had effect on the yields of the amides as well. 胺的亲核能力对醯胺的收率也有一定的影响。
- To study the nucleophilic addition of N-methylhydroxylamine and O-methylhydroxylamine to unsaturated nitro compounds. 研究N-甲基羟胺与O-甲基羟胺对不饱和硝基化合物的加成反应。
- Treatments of pyrylium salts with various nucleophilic reagents allows the production of a host of functionalized derivatives. 如果各种亲核试剂与吡喃盐反应，就可制取许多种带官能基的衍生物。
- METHODS(9S)-Erythromycylamine was synthesized from Erythromycin through nucleophilic addtion,diazotization and hydrogenation reactions. 方法以红霉素为原料,经亲核加成、重氮化、氢化三步合成(9S)-红霉胺。
- 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;
- In the substitution reaction of nucleophilic, whatever we use S_N1 or S_N2 reaction course, the rate of reaction is the most rapid. 在亲核取代反应中;无论按S_N1历程还是S_N2历程,烯丙式卤代烃的反应速度都是最快的。
- The bactericides of aldehydes and quaternary ammonium salts killed bacteria through nucleophilic additional reaction,infiltration and diffusion resp. 醛类、季铵盐类杀菌剂分别通过亲核加成反应、渗透和扩散杀灭细菌；
- The chiral HMPA analogues 1 and 2 were prepared in high yield by nucleophilic substitution between the chiral secondary amine and phosphoryl chloride. 以磷酰氯为原料通过与手性仲胺的亲核取代反应高产率地合成了手性HMPA类似物。
- Methods Starting from anisole,liarozole was synthesized by Friedel-Crafts(acylation,)nitration,nucleophilic substitution,reduction and cyclization. 方法以苯甲醚为起始原料,经傅克酰基化、硝化、取代、还原、环合等7步反应得到目标化合物利阿唑。
- This thesis reported the synthesis of novel nucleophilic chiral amine catalysts and their application in asymmetric reactions. 近年来,亲核手性胺催化剂的合成与应用得到了迅速发展,成为当前有机小分子催化研究的热点。
- Two new polyorganophosphazenes containing carbazolyl side groups were obtained from poly((dichlorophosphazene)) via nucleophilic substitution reaction. 利用聚氯磷腈的亲核取代反应合成了2种咔唑全取代的有机聚磷腈高分子材料,对其结构进行了表征。
