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.
含活性基团的醛可与烯丙基碘和锡粉直接进行亲核加成反应，得到高烯丙基型的醇。水的存在不利于此反应的进行。
Aldehyde containing functional groups can react with allyl iodine and tin directly, water is of no advantage to the reaction.
指出，共振核—CF 2—的化学位移不仅受第一、二邻位基团的影响，也受第三邻位的影响。
These results indicated that the chemical shifts of central -cf2 - group are not only affected by the first and the second neighboring groups, but also by the third neighboring group.
组蛋白是存在于真核细胞核中的与含很多磷酸基团的DNA紧密结合的蛋白质。
Histones are protein - found in eukaryotic cell nuclei, tightly bound to DNA, which has many phosphate groups.
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.
反应机理推测为丝、苏氨酸的侧链基团羟基在咪唑的存在下亲核进攻磷原子形成五配位中间体。
Only N-phosphoryl serine and threonine methyl esters were catalyzed by imidazole, A new type of pentacoordinate phosphorus intermediate was proposed.
合成了一种新的携带有葸荧光基团和硫脲基的阴离子受体2，通过核磁氢谱、质谱和元素分析等表征了它的结构。
A novel anion receptor 2 bearing anthracene flurophore and thiourea was synthesized and identified by 1H NMR MS, IR and elemental analysis.
合成了一种新的携带有葸荧光基团和硫脲基的阴离子受体2，通过核磁氢谱、质谱和元素分析等表征了它的结构。
A novel anion receptor 2 bearing anthracene flurophore and thiourea was synthesized and identified by 1H NMR MS, IR and elemental analysis.
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