有机化学 ›› 2014, Vol. 34 ›› Issue (10): 2106-2118.DOI: 10.6023/cjoc201404014 上一篇    下一篇

研究论文

5H-[1,2,4]三嗪并[5,6-b]吲哚-3-硫醇类化合物的简便合成

高文涛, 兰帅, 白仁青卓玛, 李阳   

  1. 渤海大学超精细化学品研究所 锦州 121000
  • 收稿日期:2014-04-08 修回日期:2014-05-08 发布日期:2014-06-03
  • 通讯作者: 高文涛 E-mail:isfc@bhu.edu.cn
  • 基金资助:

    辽宁省自然科学基金(No. 20120001)及辽宁省教育厅科学研究(No. L2013428)资助项目.

Convenient Synthesis 5H-[1,2,4]Triazine[5,6-b]indole-3-thiol Derivatives

Gao Wentao, Lan Shuai, Bairenqing Zhuoma, Li Yang   

  1. Institute of Superfine Chemicals, Bohai University, Jinzhou 121000
  • Received:2014-04-08 Revised:2014-05-08 Published:2014-06-03
  • Supported by:

    Project supported by the Natural Science Foundation of Liaoning Province (No. 20120201) and the Scinetific Research Foundation of the Education Department of Liaoning Province (No. L1013428).

报道了以2-甲(乙)基苯胺1a1b为原料经Sandmeyer反应得到7-甲(乙)基靛红2a2b;再以环境友好的聚乙二 醇-400为溶剂,N-溴代丁二酰亚胺(NBS)为绿色溴代试剂对2a 2b进行5位溴代,得到5-溴-7-甲(乙)基靛红3a3b 2a2b3a3b进一步氮烃基化得到1-烃基-7-甲(乙)基靛红4a4j和1-烃基-5-溴-7-甲(乙)基靛红5a5j. 2a2b3a3b4a4j5a5j分别与硫代氨基脲,在以二氧六环为溶剂,碳酸钾存在的条件下回流反应,简便地合成了24种5H-[1,2,4]三嗪并[5,6-b]吲哚-3-硫醇类杂环化合物6a6x. 大部分化合物未见文献报道,其结构经红外光谱、质谱、核磁氢谱(碳谱)和元素分析确认.

关键词: 7-甲(乙)基靛红, 5-溴-7-甲(乙)基靛红, 溴代, 烃基化, 5H-[1,2,4]三嗪并[5,6-b]吲哚-3-硫醇

2-Methyl(ethyl)aniline 1a, 1b were first underwent the Sandmeyer reaction to give 7-methyl (ethyl) isatins 2a, 2b. The resulting 2a, 2b were then subjected to the bromination reaction with N-bromosuccinimide (NBS) using eco-friendly PEG-400 as solvent at room temperature to afford 5-bromo-7-methyl (ethyl) isatins 3a, 3b. Compounds 2a, 2b, 3a, 3b were further alkylated at the nitrogen atom to give the corresponding 1-alkylation-7-methyl (ethyl) isatins 4a4j, and 1-alkylation-5-bromo-7-methyl(ethyl)isatins 5a5j. Finally, 2a, 2b, 3a, 3b, 4a4j, 5a5j were subjected to the condensation reaction with thiosemicarbazide using dioxane as solvent and potassium carbonate as alkali to successfully synthesize 24 kinds of 5H-[1,2,4]triazine[5,6-b]indole-3-thiol derivatives 6a6x. Most of compounds were new and their structures were confirmed by IR, MS, 1H NMR and 13C NMR spectra and elemental analyses.

Key words: 7-methyl(ethyl)isatin, 5-bromo-7-methyl(ethyl)isatin, bromination, alkylation, 5H-[1,2,4]triazino-[5,6-b]-indole-3-thiol