电性分析在培养学生有机化学思维能力教学中的应用

Application of Electronic Density Distribution Analysis in Organic Chemistry Teaching for Developing Organic Chemistry Thinking

将电性分析引入到有机化学教学中,在认识反应机理的基础上,引导学生从化合物中官能团的电性分析入手来实现多、散、规律性不强的有机反应以及相关规则的联网融合,形成以电性分析为基础的整合知识体系,如实现了烯烃亲电/亲核加成、醛酮亲核加成等的统一,实现苯环上亲电/亲核取代、五元杂环亲电取代、六元杂环亲电/亲核取代反应的统一。基于电性分析的教学方法培养了学生的有机化学思维能力,使学生找到了掌握有机反应的便捷方法,记忆负担大为减轻,学习效率、学习兴趣、运用知识的灵活性得到提高。

This paper described the application of electronic density distribution analysis in organic chemistry teaching.In detail,after students got hold of mechanisms of organic reactions,teacher guided students to explore organic reactions based on electronic density distribution analysis of the functional group,to achieve the fusion of isolated,numerous,and weak logical reactions with rules.A knowledge system was therefore formed on the basis of electronic density distribution analysis.For example,integration of the electrophilic/nucleophilic addition reactions of alkenes and nucleophilic addition reactions of aldehydes/ketones has been reached;integration of the electrophilic/nucleophilic substitution reactions on benzene ring/six-membered heteroaromatic ring and electrophilic substitution reactions on five-membered heteroaromatic ring has been reached.Teaching method based on the electronic density distribution analysis helps students to develop organic chemistry thinking.Students therefore found a general method to master organic reactions,significantly reducing students’burden of memory.In a word,electronic density distribution analysis shows a distinct advantage in improving the efficiency and interest of learning as well as the flexibility in knowledge applications.