N-phenyl-5-(thiophene-2-yl)-1,3,4-oxadiazol-2-amine | 91872-13-8

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: N-phenyl-5-(thiophene-2-yl)-1,3,4-oxadiazol-2-amine
• 英文别名: 2-benzyl-5-(thiophen-2-yl)-1,3,4-oxadiazole；N-phenyl-5-(2-thiophenyl)-1,3,4-oxadiazol-2-amine；N-phenyl-5-thiophen-2-yl-1,3,4-oxadiazol-2-amine
• CAS: 91872-13-8
• 化学式: C₁₂H₉N₃OS
• 分子量: 243.289
• InChiKey: SLRBPFPZSBWCSX-UHFFFAOYSA-N

物化性质

• 沸点：
  407.3±37.0 °C(Predicted)
• 密度：
  1.355±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  3
• 重原子数：
  17
• 可旋转键数：
  3
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  79.2
• 氢给体数：
  1
• 氢受体数：
  5

反应信息

• 作为产物：
  描述：

  N-phenyl-2-(thiophene-2-carbonyl)hydrazinecarbothioamide 在 O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate 、 N,N-二异丙基乙胺 作用下， 以 N,N-二甲基甲酰胺 为溶剂， 以87%的产率得到N-phenyl-5-(thiophene-2-yl)-1,3,4-oxadiazol-2-amine
  参考文献：
  名称：

  使用TBTU高效合成1,3,4-恶二唑衍生物

  摘要：

  用于从异硫氰酸酯和酰肼2,5-二取代的1,3,4-恶二唑，通过环化脱硫中的（存在下合成的有效方法Ô（苯并三唑-1-基） - - ñ，Ñ，N' ，N' -已经开发出四甲基脲鎓四氟硼酸酯（TBTU）作为铀偶联剂。本方法具有几个优点，例如简单和容易的后处理程序，温和的反应条件，并且对环境无害。

  DOI：

  10.1016/j.tet.2012.11.071

文献信息

• A KHSO4 mediated facile synthesis of 2-amino-1,3,4-oxadiazole derivatives
  作者：Binyu Long、Binghua Tian、Qiang Tang、Xiangnan Hu、Lei Han、Zifan Wang、Chenyu Wang、Yue Wu、Yu Yu、Zongjie Gan

  DOI：10.1016/j.tet.2021.132382

  日期：2021.9

  A novel, efficient and mild KHSO4 mediated synthesis for 2-amino-1,3,4-oxadiazoles has been established via the cyclodesulfurization of benzoylhydrazine and isothiocyanate derivatives in one pot. The reactions proceeded smoothly at room temperature and produced corresponding products in moderate to good yields. This protocol also showed good functional group tolerance.

  通过苯甲酰肼和异硫氰酸酯衍生物的环化脱硫，建立了一种新型、高效且温和的 KHSO 4介导的 2-氨基-1,3,4-恶二唑合成方法。反应在室温下顺利进行，并以中等至良好的收率产生相应的产物。该协议还显示出良好的官能团耐受性。
• Tribromoisocyanuric acid as an alternative oxidant in the synthesis of 2-amino-1,3,4-oxadiazoles from 1-acylthiosemicarbazides
  作者：Jaime Crispim-Neto、Marcio C.S. de Mattos

  DOI：10.1016/j.tetlet.2023.154494

  日期：2023.5

  conversion of 1-acylthiosemicarbazides into 2-amino-1,3,4-oxadiazoles by the reaction with tribromoisocyanuric acid. 1-Acylthiosemicarbazides with diverse substituents such as alkyl, benzyl, and (hetero)aryl were prepared from acylhydrazides and isothiocyanates in up to 97% yield and converted into respective 2-amino-1,3,4-oxadiazoles in 19–93% yield This protocol presents simple reaction conditions,

  已开发出一种简单、有效且环境友好的方法，通过与三溴异氰尿酸反应将 1-酰基氨基硫脲转化为 2-氨基-1,3,4-恶二唑。由酰肼和异硫氰酸酯制备具有不同取代基（如烷基、苄基和（杂）芳基）的 1-酰基氨基硫脲，收率高达 97%，并以 19–93% 的收率转化为相应的 2-氨基-1,3,4-恶二唑该协议提供了简单的反应条件、易于获取的试剂，无需任何特殊设备。
• Efficient one-pot synthesis of substituted 2-amino-1,3,4-oxadiazoles
  作者：Eugene L. Piatnitski Chekler、Hassan M. Elokdah、John Butera

  DOI：10.1016/j.tetlet.2008.09.057

  日期：2008.11

  A convenient one-pot method for the preparation of substituted 2-amino-1,3,4-oxadiazoles has been developed. The method is a significant improvement over previously reported syntheses. Reaction of carboxylic acids with thiosemicarbazides afforded the corresponding oxadiazoles in moderate to good yields. In general, the products precipitated from the reaction mixture, and were collected by filtration. In most of the cases, no chromatographic separations were required. To explore the scope and limitations of this reaction, various aliphatic, aromatic, and heteroaromatic carboxylic acids were reacted with different substituted thiosemicarbazides. The influence of R-1 and R-2 substituents on the reaction yield and additional results demonstrating the versatility of this method are presented. (c) 2008 Elsevier Ltd. All rights reserved.
• WIENIAWSKI, W., BIUL. INF. INST. LEK., 1983, 30, N 1-2, 179-186
  作者：WIENIAWSKI, W.

  DOI：——

  日期：——