有机化学 ›› 2020, Vol. 40 ›› Issue (6): 1540-1548.DOI: 10.6023/cjoc202002029 上一篇    下一篇

所属专题: 有机电合成虚拟专辑

研究论文

电催化合成2,5-二取代1,3,4-噁二唑衍生物

李梦帆, 王榕, 郝文娟, 姜波   

  1. 江苏师范大学化学与材料科学学院 徐州 221116
  • 收稿日期:2020-02-23 修回日期:2020-03-26 发布日期:2020-04-10
  • 通讯作者: 姜波 E-mail:jiangchem@jsnu.edu.cn
  • 基金资助:
    国家自然科学基金(No.21971090)、江苏省研究生科研创新计划(No.SJKY19_2003).

Electrocatalytic Synthesis of 2,5-Disubstituted 1,3,4-Oxadiazoles

Li Mengfan, Wang Rong, Hao Wenjuan, Jiang Bo   

  1. School of Chemistry & Materials Science, Jiangsu Normal University, Xuzhou 221116
  • Received:2020-02-23 Revised:2020-03-26 Published:2020-04-10
  • Supported by:
    Project supported by the National Natural Science Foundation of China (No. 21971090), and the Postgraduate Research Innovation Program of Jiangsu Province (No. SJKY19_2003).

1,3,4-噁二唑作为一种多杂原子的五元杂环类化合物,不仅具有抗炎、抗肌醇和抗惊厥等生物活性,而且是一种重要的有机合成中间体,对其进行合成研究具有重要意义.利用廉价易得的醛和酰肼作为原料,在电催化条件下,一步合成非对称的2,5-二取代1,3,4-噁二唑衍生物,收率良好.其结构经IR、1H和13C NMR、HRMS等进行了确证.该反应条件温和,原子经济性高,底物范围广,为构建1,3,4-噁二唑骨架提供了一种绿色、可持续的合成途径.

关键词: 绿色化学, 1,3,4-噁二唑衍生物, 电化学合成, 自由基环化

1,3,4-Oxadiazoles, standing for a class of five-membered heterocyclic compounds with multiple heteroatoms, show anti-inflammatory, anti-convulsant, anti-inositol and other biological activities. They also served as important intermediates in organic synthesis. Thus, the development of general and straightforward methods for their synthesis is of great significance. In this paper one-step synthesis of non-symmetric 2,5-disubstituted 1,3,4-oxadiazole derivatives with good yield was completed under electrocatalytic conditions by using cheap and readily available aldehydes and hydrazides as starting materials. Their structures were confirmed by IR, 1H NMR, 13C NMR and HRMS analyses. The reaction features mild conditions, high atom-economy and wide substrate scope, providing a green and sustainable synthetic protocol for constructing 1,3,4-oxadiazole skeleton.

Key words: chemistry, 1,3,4-oxadiazoles, electrosynthesis, radcial cyclization