Chinese Journal of Organic Chemistry ›› 2024, Vol. 44 ›› Issue (5): 1641-1648.DOI: 10.6023/cjoc202311017 Previous Articles     Next Articles

ARTICLES

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)

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