亲电子试剂为化学术语,是指在化学反应中对含有可成键电子对的原子或分子(亲核试剂nucleophile)有亲和作用的原子或分子的试剂。亲电试剂一般都是带正电荷的试剂或具有空的p轨道或者d轨道,能够接受电子对的中性分子。
大部分的遗传毒性致癌物是与DNA结合的亲电子试剂,它们直接与DNA相互作用,形成共价键,从而形成DNA -致癌物复合体,或称之为dna加合物。
Most of Genotoxic carcinogens are electrophiles that bind with DNA, and they interact directly with DNA and form covalent bond, resulting in DNA-carcinogen complexes, or DNA adducts.
探讨碱性、溶剂极性、离去基团、吸电子基团、亲核试剂的亲核性对反应影响。
There are impact factor to be discussed such as solvent polarity, nucleofuge, attract electron group the nunucleophilicity of nucleophilic reagent.
并且对亲核试剂的体积效应、溶剂效应对亲核性影响,底物上吸电子基团的数目、吸电子能力对亲电性的影响,以及亲核取代反应的发生部位受哪些因素影响进行探讨。
At the same time, discuss about the impact factor to nucleophilicity such as the number of attract electron group, ability of attract electron and the nucleophilic substitution reaction part.
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