辽宁石油化工大学学报 ›› 2022, Vol. 42 ›› Issue (2): 23-29.DOI: 10.3969/j.issn.1672-6952.2022.02.004

• 化学与化学工程 • 上一篇    下一篇

基于1,3⁃环己二酮砌块的吲哚类似物合成研究

席爽(), 王锐()   

  1. 辽宁石油化工大学 石油化工学院,辽宁 抚顺 113001
  • 收稿日期:2021-03-03 修回日期:2021-03-26 出版日期:2022-04-25 发布日期:2022-05-21
  • 通讯作者: 王锐
  • 作者简介:席爽(1996⁃),女,硕士研究生,从事有机合成化学方面的研究;E⁃mail:17854237063@163.com
  • 基金资助:
    国家自然科学基金项目(21402078)

Synthesis of Indole Analogues Based on 1,3⁃Cyclohexanedione Building Blocks

Shuang Xi(), Rui Wang()   

  1. School of Petrochemical Engineering,Liaoning Petrochemical University,Fushun Liaoning 113001,China
  • Received:2021-03-03 Revised:2021-03-26 Published:2022-04-25 Online:2022-05-21
  • Contact: Rui Wang

摘要:

以廉价易得和具备多种反应性的2位单侧链取代的1,3?环己二酮化合物作为合成砌块,以苯基四氟硼酸重氮盐作为原料,采用经典的Japp?Klingemann费舍尔吲哚合成法,对其进行开环碎裂化,进而环合,得到更有价值的多取代吲哚结构单元。其中,以2?甲基?1,3?环己二酮和苯基四氟硼酸重氮盐作为原料,在对甲苯磺酸作为酸试剂、甲苯为溶剂的回流条件下,反应15.0 h,能以49%的产率得到关环吲哚产物;以2?苄基?1,3?环己二酮和苯基四氟硼酸重氮盐作为原料,在体积分数为30%的盐酸乙醇溶液的封管加热回流条件下,反应0.5 h,能以98%的产率得到关环吲哚产物。该合成方法学可应用于吲哚类生物碱的全合成研究中。

关键词: 1,3?环己二酮, 吲哚类似物, 碎裂化, Japp?Klingemann 费舍尔吲哚合成法

Abstract:

In this paper, used cheap, easy?to?obtain and multi?reactive 2?position single?side chain substituted 1,3?cyclohexanedione compound as a synthetic building block, used phenyl tetrafluoroborate diazonium salt as raw material, and adopt classic Japp?Klingemann fischer indole synthesis method, it is ring?opening fragmentation and following ring?closing to obtain more valuable multi?substituted indole structural units. Among them, 2?methyl?1,3?cyclohexidone and a diazonium salt of phenyl tetrafluoroborate were used as raw materials, under reflux conditions of p?toluenesulfonic acid as the acid reagent and toluene as the solvent, when the reaction was carried out for 15.0 h, the closed ring indole products were obtained with a yield of 49%; Meanwhile, 2?benzyl?1,3?cyclohexidone and a diazonium salt of phenyl tetrafluoroborate were used as raw materials, under the condition of heating and refluxing in a sealed tube of 30% hydrochloric acid ethanol solution, when the reaction was carried out for 0.5 h, the closed ring indole products were obtained with a yield of 98%. This methodology can be applied to the total synthesis of indole alkaloids.

Key words: 1,3?cyclohexanedione, Indole analogs, Fragmentation, Japp?Klingemann fischer indole synthesis method

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引用本文

席爽, 王锐. 基于1,3⁃环己二酮砌块的吲哚类似物合成研究[J]. 辽宁石油化工大学学报, 2022, 42(2): 23-29.

Shuang Xi, Rui Wang. Synthesis of Indole Analogues Based on 1,3⁃Cyclohexanedione Building Blocks[J]. Journal of Liaoning Petrochemical University, 2022, 42(2): 23-29.

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