5-methyl-2-[N-(prop-2-ynyl)amino]benzoxazole | 168199-12-0

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 苯并恶唑类
• 英文名称: 5-methyl-2-[N-(prop-2-ynyl)amino]benzoxazole
• 英文别名: 5-methyl-N-prop-2-ynyl-1,3-benzoxazol-2-amine
• CAS: 168199-12-0
• 化学式: C₁₁H₁₀N₂O
• 分子量: 186.213
• InChiKey: MHLUXVBDDVCAQM-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.6
• 重原子数：
  14
• 可旋转键数：
  2
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.18
• 拓扑面积：
  38.1
• 氢给体数：
  1
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  5-methyl-2-[N-(prop-2-ynyl)amino]benzoxazole 在 silver tetrafluoroborate 作用下， 以 氘代乙腈 为溶剂， 生成 6-Methyl-2H-9-oxa-1,4a-diaza-fluorene
  参考文献：
  名称：

  Facile Rearrangements of Alkynylamino Heterocycles with Noble Metal Cations

  摘要：

  A number of 2-(alkynylamino)-substituted heterocycles have been synthesized. These heterocycles rearrange in the presence of silver(I) and gold(I) salts to give novel 2H-pyrimido[2,1-b]benzoxazoles, 2H-pyrimido[2,1-b]benzothiazoles, and a 2H-pyrimido[2,1-b]benzoselenazole. Two of the the 2H-pyrimido[2,1-b]benzoxazoles were isolated in good yield. The kinetics of the silver tetrafluoroborate-catalyzed rearrangements of selected (alkynylamino)benzoxazoles and benzothiazoles have been examined by H-1 NMR in CD3CN. Factors affecting the electron densities of the triple bond and of the nitrogen atom in the heterocycle are important in influencing the rate of rearrangement.

  DOI：

  10.1021/jo952101z
• 作为产物：
  描述：

  2-巯基-5-甲基苯并恶唑 在 五氯化磷 、 三乙胺 、 三氯氧磷 作用下， 以 乙腈 为溶剂， 反应 2.5h， 生成 5-methyl-2-[N-(prop-2-ynyl)amino]benzoxazole
  参考文献：
  名称：

  Facile Rearrangements of Alkynylamino Heterocycles with Noble Metal Cations

  摘要：

  A number of 2-(alkynylamino)-substituted heterocycles have been synthesized. These heterocycles rearrange in the presence of silver(I) and gold(I) salts to give novel 2H-pyrimido[2,1-b]benzoxazoles, 2H-pyrimido[2,1-b]benzothiazoles, and a 2H-pyrimido[2,1-b]benzoselenazole. Two of the the 2H-pyrimido[2,1-b]benzoxazoles were isolated in good yield. The kinetics of the silver tetrafluoroborate-catalyzed rearrangements of selected (alkynylamino)benzoxazoles and benzothiazoles have been examined by H-1 NMR in CD3CN. Factors affecting the electron densities of the triple bond and of the nitrogen atom in the heterocycle are important in influencing the rate of rearrangement.

  DOI：

  10.1021/jo952101z

文献信息

• Heterogeneously Porous γ-MnO₂-Catalyzed Direct Oxidative Amination of Benzoxazole through CH Activation in the Presence of O₂
  作者：Provas Pal、Arnab Kanti Giri、Harshvardhan Singh、Subhash Chandra Ghosh、Asit Baran Panda

  DOI：10.1002/asia.201402057

  日期：2014.9

  Oxidative amination of azoles through catalytic CH bond activation is a very important reaction due to the presence of 2‐aminoazoles in several biologically active compounds. However, most of the reported methods are performed under homogeneous reaction conditions using excess reagents and additives. Herein, we report the heterogeneous, porous γ‐MnO2‐catalyzed direct amination of benzoxazole with

  通过催化Ç唑类的氧化胺化 H键活化是在几个生物活性化合物由于2- aminoazoles存在一个非常重要的反应。然而，大多数报道的方法是在均相反应条件下使用过量的试剂和添加剂进行的。在这里，我们报告的异类，多孔γ-的MnO 2苯并恶唑与各种伯胺和仲胺的催化直接胺化。胺化反应在温和的反应条件下进行，使用分子氧作为绿色氧化剂，无任何添加剂。催化剂可以很容易地通过过滤分离并重复使用几次，而不会显着降低其催化性能。值得注意的是，该反应可耐受诸如醇的官能团，因此表明该反应的广泛适用性。