aromatic substitution 中文意思是什麼

aromatic substitution 解釋
芳香族取代
  • aromatic : adj. 1. 香氣濃的，芳香的。2. 【化學】芳香族的。n. 1. 芳香植物。2. 〈常 pl. 〉 香料，芳香劑。
  • substitution : n. 1. 代，代用，代替，更替，置換。2. 【化學】取代；【數學】代換；代入；【法律】預定繼承人；【語法】詞的代用。adj. -al ,-ary adj.
  1. Most direct substitution of groups bound to an aromatic nucleus is limited to diazonium salts.

    大多數連于芳核能被直接取代的基團僅限於重氮鹽。
  2. Like the amino group, the phenolic group powerfully activates aromatic rings toward electrophilie substitution, and in essentially the same way.

    對于親電取代反應，酚基基本上以同氨基一樣的方式使芳環強烈活化。
  3. The pocket accommodating the aromatic ring of phenylalanine is formed predominantly by hydrophobic side - chains, including those of ile10, ile13, prol50, leul75, leul79, phe209, ser211 and val221 ; whilst the amino group and carboxylate group of phenylalanine is coordinated by asp6, asp7, gln151 and ser180. the n - terminal region is found to be important to the function of arog. point mutation reveals that residue substitution of ilelo to ala10 leads to desensitization in the presence of 1 mm phenylalanine, simultaneously, exhibits a dramatic decrease in enzymatic activity

    綜合前人的研究和本研究工作的實驗數據，得出以下結論： 1 ）在arog的反饋抑制位點供苯丙氨酸結合的疏水口袋由asp6 、 asp7 、 ile10 、 ile13 、 pro150 、 gln151 、 leu175 、 leu179 、 ser180 、 phe209 、 ser211和val221等12個氨基酸殘基構成； 2 ）苯丙氨酸結合的疏水口袋分為兩個區域，與苯丙氨酸的苯環發生疏水作用的區域由ile10 、 ile13 、 pro150 、 leu175 、 leu179 、 phe209和val221的側鏈構成，而asp6 、 asp7 、 gln151和ser180的側鏈構成了與苯丙氨酸的氨基和羧基相互作用的區域。
  4. Nucleophilic aromatic substitution. strategies in the synthesis of multisubstituted benzene derivatives

    親核性芳香取代。多取代苯衍生物合成的策略。
  5. Directing effects in electophilic aromatic substitution. nucleophilic aromatic substitution. strategies in the synthesis of multisubstituted benzene derivatives

    31親電性芳香取代的定位效應。親核性芳香取代反應。合成多取代苯衍生物的策略。
  6. The aromatic electrophilic substitution reaction was studied using nmr for the first time. on the base of substituents effects on the benzene, the orientation effect and reactivity was analysised quantitatively. this method may mostly predict the aromatic electrophilic substitution reaction

    首次採用nmr研究芳基親電取代反應.依據取代基對苯的影響，定量分析了定位效應和反應活性.此法對芳基親電取代反應有一定的預見性
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