有机化学 ›› 2022, Vol. 42 ›› Issue (7): 2079-2088.DOI: 10.6023/cjoc202201039 上一篇    下一篇

研究论文

醋酸碘苯促进的脱氢氧化反应合成2-硫芳(烷)基苯酚及10H-吩噻嗪

曹廷舒, 魏向阳, 罗敏, 汪逸飞, 潘子俊, 徐程*(), 殷国栋*()   

  1. 湖北师范大学化学化工学院 污染物分析与资源化湖北省重点实验室 湖北黄石 435002
  • 收稿日期:2022-01-24 修回日期:2022-04-12 发布日期:2022-08-09
  • 通讯作者: 徐程, 殷国栋
  • 基金资助:
    湖北省教育厅科学技术研究(D20192503)

PhI(OAc)2-Promoted Dehydrogenation Oxidation for the Synthesis of 2-(Aryl/alkylthio)phenols and 10H-Phenothiazines

Tingshu Cao, Xiangyang Wei, Min Luo, Yifei Wang, Zijun Pan, Cheng Xu(), Guodong Yin()   

  1. Hubei Key Laboratory of Pollutant Analysis and Reuse Technology, College of Chemistry and Chemical Engineering, Hubei Normal University, Huangshi, Hubei 435002
  • Received:2022-01-24 Revised:2022-04-12 Published:2022-08-09
  • Contact: Cheng Xu, Guodong Yin
  • Supported by:
    Science and Technology Research Project of Educational Commission of Hubei Province(D20192503)

报道了一种醋酸碘苯促进苯酚邻位C(sp2)—H与硫酚S—H之间通过氧化脱氢直接构建C—S键合成2-硫芳(烷)基苯酚衍生物的新方法. 当底物为2-氨基苯硫酚时, 则实现了缩合环化产物10H-吩噻嗪的高效合成. 未见文献报道的新化合物均通过了1H NMR、13C NMR、IR和HRMS的表征, 其中2-((4-溴苯基)硫代)-1,4-苯二酚(3i)的结构还通过了X-ray单晶衍射的证实. 该方法原料易得、条件温和、操作简便, 同时具有良好的原子经济性.

关键词: 2-硫芳(烷)基苯酚, 10H-吩噻嗪, 脱氢氧化, C—S键形成

A PhI(OAc)2-promoted reaction for the synthesis of 2-(aryl/alkylthio)phenol derivatives has been developed, which was realized via dehydrogenation oxidation between ortho-C(sp2)—H of phenols and S—H of thiophenols for direct formation of C—S bonds. Particularly, this method was also successfully applied for the efficient construction of tricyclic 10H-phenothiazines using 2-aminothiophenols as the substrates. All the newly synthesized products were identified by means of 1H NMR, 13C NMR, IR and HRMS. Besides, 2-((4-bromophenyl)thio)benzene-1,4-diol (3i) was further confirmed by X-ray single crystal diffraction analysis. The method has the advantages of simple and easily available starting materials, mild reaction conditions, simple operation, as well as high atom economy.

Key words: 2-(aryl/alkylthio)phenols, 10H-phenothiazines, dehydrogenation oxidation, C—S bond formation