| 烷基对羰基反应性能影响的CNDO／2研究 |
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| 引用本文： | 黄柳书. 烷基对羰基反应性能影响的CNDO／2研究[J]. 高等学校化学学报, 1991, 12(2): 253-255 |
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| 作者姓名： | 黄柳书 |
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| 作者单位： | 广东工学院化工系 510090 |
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| 摘 要： | 对于碳-氧双键和亲核试剂的加成反应,由于负离子进攻为反应速度决定步骤,人们普遍认为羰基的反应性能主要取决于碳原子上的正电荷量,正电荷愈多亲核试剂愈易加成,全部反应也愈易进行。并认为酮的羰基的亲电能力比醛弱,这是由于酮的羰基和2个烃基相结合,如为烷基,具有给电子作用,则增加羰基碳原子电负性,降低其亲电能力。
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| 关 键 词： | 烷基 羰基 反应性 CNDO／2 |
A Study of the Effect of Alkyl Group on the Reactivity of Carbonyl Compounds by CNDO/2 |
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| Huang Liu-shu. A Study of the Effect of Alkyl Group on the Reactivity of Carbonyl Compounds by CNDO/2[J]. Chemical Research In Chinese Universities, 1991, 12(2): 253-255 |
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| Authors: | Huang Liu-shu |
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| Abstract: | According to the results of CNDO/2, this paper considers that the positive charge of the car-boxylic carbon increases under the influence of alkyl group. This is in agreement with the rule that alkyl groups have the a-electron repulsing effect. The frontier orbital method is used to explanin that alkyl group reduces reactivity of carbonyl group. |
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| Keywords: | Inductive effect of alkyl group Reactivity of carbonyl group Frontier orbital method |
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