有机化学 ›› 2011, Vol. 31 ›› Issue (06): 824-831. 上一篇    下一篇

研究论文

含1,3,4-噁二唑和1,3,4-噻二唑的硫醚类化合物的合成

武现丽,朱春风,吕志丹,魏成事,廖新成*   

  1. (郑州大学化学系 郑州 450052)
  • 收稿日期:2010-09-10 修回日期:2011-01-10 发布日期:2011-01-21
  • 通讯作者: 廖新成 E-mail:lxc66@zzu.edu.cn

Synthesis of Sulfur Ethers Containing 1,3,4-Oxadiazole and 1,3,4-Thiadiazole

WU Xian-Li, ZHU Chun-Feng, LV Zhi-Dan, WEI Cheng-Shi, LIAO Xin-Cheng   

  1. (Department of Chemistry, Zhengzhou University, Zhengzhou 450052)
  • Received:2010-09-10 Revised:2011-01-10 Published:2011-01-21
  • Contact: Xin-Cheng Liao E-mail:lxc66@zzu.edu.cn

在KOH作用下, 芳甲酰肼1a~1e与CS2环化生成5-芳基-2-巯基-1,3,4-噁二唑(2a~2e);将2a~2e与氯乙酸乙酯反应, 生成2-(5-芳基-1,3,4-噁二唑)硫基乙酸乙酯(3a~3e);3a~3e肼解得2-(5-苯基-1,3,4-噁二唑-2-硫基)乙酰肼(4a~4e);4a~4e与芳酰基异硫氰酸酯5a~5d反应得到双酰基氨基硫脲衍生物A1~A19;A1~A19在H2SO4催化下环合得到目标化合物B1~B19;目标化合物的结构经IR, 1H NMR, MS, HRMS确证.

关键词: 1,3,4-噁二唑, 1,3,4-噻二唑, 氨基硫脲, 硫醚

5-Aryl-2-mercapto-1,3,4-oxadiazoles (2a~2e) have been obtained by the reaction of arylcarboxylic acid hydrazides 1a~1e with carbon disulfide in the presence of potassium hydroxide. Then the reaction of compounds 2a~2e with ethyl chloroacetate produced 2-(5-aryl-1,3,4-oxadiazol)thio esters (3a~3e). The treatment of compounds 3a~3e with hydrazine hydrate resulted in the formation of acide hydrazides 4a~4e. The biacyl thiosemicarbazide derivatives A1~A19 were synthesized by the reaction of corresponding compounds 4a~4e with aroyl isothiocyanates 5a~5d. The target compounds B1~B19 were prepared by cyclization of compouds A1~A19 in the presence of CH3OH/H2SO4, and their structures were confirmed by IR, 1H NMR, MS and HRMS techniques.

Key words: 1,3,4-oxadiazole, 1,3,4-thiadiazole, thiosemicarbazide, sulfur ether