... sequence rule次序规则 electron-attracting grou p吸电子基 Huckel rule休克尔规则 ...
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...主目录 返回 2008-1-21α和β 位氢有弱酸性 R C W R C- W H B H 有弱酸性 B- (碱) W: 吸电子基(electron withdrawing group) ( ) 在卤代烷中 δδ δ R C C X C C X- HNu β α β R α H H H Nu- 消除βH成烯烃 成 β α和β位氢均有弱酸性 消除反应El...
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... 接纳体;acceptor 受电子基;吸电子基;acceptor group 电子对受体;电子对接受体;electron pair acceptor ...
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供吸电子基 donor-acceptor electrons
吸电子基团 [有化] electron-withdrawing group
吸电子取代基 electron with-drawing group
给/吸电子取代基 Donor/acceptor substituents
吸电子型芳基格氏试剂 electron-withdrawing aryl Grignard reagent
含有吸电子基团的二硝基苯类化合物反应活性明显高于含有供电子基的二硝基化合物的加氢反应;
The dinitrobenzene with electron-withdrawing group can be hydrogenated much easier than the dinitrobenzene with electron-donating group.
研究发现,无论对于吸电子取代基还是供电子的取代基对烯基亚砜的活性都没有任何影响,而邻甲基苯醌前体化合物中所带有的吸电子基团能增加其反应活性。
It was found that both the electro-withdraw and electro-donating substituents have no effect on reaction activity and the electro-withdraw substituents can increase the reaction activity.
设计合成了一类以蒽为电子给体,带不同吸电子取代基的苯为电子受体的新型短程有机电子给体受体体系。
A new series of short range donor acceptor systems consisting of anthracene and different substituted benzoic esters were synthesized.
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