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1a,1b为原料经Sandmeyer反应得到7-甲(乙)基靛红2a,2b;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3a,3b; 2a,2b,3a,3b进一步氮烃基化得到1-烃基-7-甲(乙)基靛红4a~4j和1-烃基-5-溴-7-甲(乙)基靛红5a~5j. 2a,2b,3a,3b,4a~4j,5a~5j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6a~6x. 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 4a~4j, and 1-alkylation-5-bromo-7-methyl(ethyl)isatins 5a~5j. Finally, 2a, 2b, 3a, 3b, 4a~4j, 5a~5j 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 6a~6x. 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