有机化学 ›› 2024, Vol. 44 ›› Issue (5): 1641-1648.DOI: 10.6023/cjoc202311017 上一篇    下一篇

研究论文

苄叉丙酮、硒粉和硼氢化钠一锅法构建四氢-2H-硒吡喃衍生物

陈栋栋*(), 杨旭锋   

  1. 吕梁学院化学化工系 山西吕梁 033001
  • 收稿日期:2023-11-20 修回日期:2023-12-27 发布日期:2024-05-30
  • 基金资助:
    山西省自然科学基金(20210302124072); 山西省自然科学基金(202203021222318); 山西省自然科学基金(202103021223386); 山西省高等学校科技创新(2021L568)

One-Pot Synthesis of Tetrahydro-2H-selenopyran Derivatives from Benzalacetones, Elemental Selenium, and Sodium Borohydride

Dongdong Chen(), Xufeng Yang   

  1. Department of Chemistry & Chemical Engineering, Lyuliang University, Lvliang, Shanxi 033001
  • Received:2023-11-20 Revised:2023-12-27 Published:2024-05-30
  • Contact: *E-mail: chenddxy@163.com
  • Supported by:
    Natural Science Foundation of Shanxi Province(20210302124072); Natural Science Foundation of Shanxi Province(202203021222318); Natural Science Foundation of Shanxi Province(202103021223386); Program for the Innovative Talents of Higher Education Institutions of Shanxi(2021L568)

报道了一种以苄叉丙酮、硒粉和硼氢化钠为原料, 采用一锅法合成一系列四氢-2H-硒吡喃衍生物的新方法. 此反应通过形成6个新的化学键很好的构建一系列含硒六元环. 得到了20个含有四氢-2H-硒吡喃结构的小分子化合物, 最高产率可达91%. X单晶衍射分析表明四氢-2H-硒吡喃六元环与环己烷具有类似的空间立体结构, 呈现出稳定的椅式构象. 此反应在克量级规模下依然可以顺利进行. 可能的反应机理表明此反应为涉及双Michael加成/二硒键的断裂/Mi- chael加成/Aldol反应的多步串级反应. 此方法具有底物适应性强、不使用过度金属催化剂以及反应条件温和的特点.

关键词: 四氢-2H-硒吡喃, 环化, 硒, 一锅法, 苄叉丙酮

A reaction has been developed to synthesize a series of tetrahydro-2H-selenopyran derivatives from benzalace- tones, sodium borohydride, and elemental selenium by one-pot method. The reaction proceeds well to construct a tetrahydro-2H-selenopyran ring and six new bonds. Twenty tetrahydro-2H-selenopyran derivatives were obtained, and the yield was up to 91%. The X-ray single crystal analysis showed that this selenium-containing heterocyclic ring exists as a stable chair conformation similar to cyclohexane. The reaction works well when scaled up to the gram scale. A possible mechanism was proposed, involving hydrogenation of selenium/double Michael addition/cleavage of diselenide bond/Michael addition/Aldol reaction. This reaction is characterized by high compatibility to substrates, transition-metal free, and mild reaction conditions.

Key words: tetrahydro-2H-selenopyran, cyclization, elemental selenium, one-pot, benzalacetones