应用化学 ›› 2025, Vol. 42 ›› Issue (7): 993-1001.DOI: 10.19894/j.issn.1000-0518.240237

• 化学教学与实验创新 • 上一篇    下一篇

以合成2-(3-甲基-2-吡嗪基)-1-苯乙酮为例推荐一个科研训练实验

王鹏1, 林健1, 武琳凯1, 白万宇1, 辛亚菲1, 陈霞1,2()   

  1. 1.山西大学化学化工学院,太原 030006
    2.山西大学煤基高端化学品绿色催化合成山西省重点实验室,太原 030006
  • 收稿日期:2024-07-29 接受日期:2025-04-04 出版日期:2025-07-01 发布日期:2025-07-23
  • 通讯作者: 陈霞
  • 基金资助:
    国家一流本科教学课程(2020230413);山西省高等学校精品共享课程(K2020024);山西省高等学校教学改革创新项目(J20240133);2023年山西省研究生教育教学改革课题(2023JG010)

Synthesis of 2-(3-Methyl-2-pyrazinyl)-1-phenylacetopheno: Recommending a Scientific Training Experiment

Peng WANG1, Jian LIN1, Lin-Kai WU1, Wan-Yu BAI1, Ya-Fei XIN1, Xia CHEN1,2()   

  1. 1.College of Chemistry and Chemical Engineering,Shanxi University,Taiyuan 030006,China
    2.Shanxi Key Laboratory for the Green Catalysis Synthesis of Coal-based Value-added Chemicals,Shanxi University,Taiyuan 030006,China
  • Received:2024-07-29 Accepted:2025-04-04 Published:2025-07-01 Online:2025-07-23
  • Contact: Xia CHEN
  • About author:chenxia@sxu.edu.cn
  • Supported by:
    the National First-Class Undergraduate Teaching Course(2020230413);Shanxi Higher Education Excellent Shared Course(K2020024);Shanxi Higher Education Teaching Reform and Innovation Project(J20240133);the 2023 Shanxi Postgraduate Education and Teaching Reform Project(2023JG010)

摘要:

无水无氧实验是有机化学合成中很重要的一种合成方法,与基础实验教学内容相比属于高阶性的科研训练内容。 本文以合成2-(3-甲基-2-吡嗪基)-1-苯乙酮为例,介绍了Schlenk技术操作流程和注意事项以及其在有机合成中的应用。 通过对产物1H NMR谱和13C NMR的分析,确定了化合物的结构,发现了该类化合物存在烯醇式和酮式的互变异构体,详细讨论了反应的机理,研究了反应过程中产物颜色变化与结构的关系。 实验过程训练了学生对水和空气敏感化合物的处理方法,强化了实验室安全意识。 通过对复杂化合物的结构分析和反应机理讨论,加深了学生对基础知识的应用,提高了分析问题和解决问题的能力,培养了学生的创新思维。

关键词: 科研训练, 无水无氧技术, 合成, 表征

Abstract:

Anhydrous and oxygen-free techniques are very important synthetic methods in organic chemical synthesis, offering higher-level scientific training content compared to the basic laboratory teaching content. In this paper, the operational procedures and safety protocols of Schlenk line technique and its application in organic synthesis were introduced using the synthesis of 2-(3-methyl-2-pyrazinyl)-1-phenylethanone as an example. The structure of the compound was determined via1H and 13C NMR spectroscopy, which revealed the presence of enol and ketone tautomers. The reaction mechanism was discussed in detail, and the relationship between the color changes and product structures was investigated. This training module not only enhances students' proficiency in handling air- and moisture-sensitive reagents but also reinforces stringent safety protocols. By analyzing the structure of compound and discussing the reaction mechanism, students deepen their application of fundamental knowledge, enhance problem-solving abilities, and cultivate innovative thinking.

Key words: Scientific research and training, Anhydrous and oxygen-free techniques, Synthesis, Characterization

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