3-Bromo-1-methylindazole-6-carbonitrile | 1620816-90-1

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 苯并吡唑类
• 英文名称: 3-Bromo-1-methylindazole-6-carbonitrile
• CAS: 1620816-90-1
• 化学式: C₉H₆BrN₃
• 分子量: 236.071
• InChiKey: UZLHAVOPMWPBAP-UHFFFAOYSA-N

物化性质

• 沸点：
  377.3±22.0 °C(Predicted)
• 密度：
  1.63±0.1 g/cm3(Temp: 20 °C; Press: 760 Torr)(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.3
• 重原子数：
  13
• 可旋转键数：
  0
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.11
• 拓扑面积：
  41.6
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  3-Bromo-1-methylindazole-6-carbonitrile 、 苯硼酸 在 四(三苯基膦)钯 、 1,10-菲罗啉 、 caesium carbonate 作用下， 以 1,4-二氧六环 、 乙醇 、 水 为溶剂， 反应 25.67h， 生成 1-methyl-3-phenyl-7-p-tolyl-1H-indazole-6-carbonitrile
  参考文献：
  名称：

  Palladium-Catalyzed Direct C7-Arylation of Substituted Indazoles

  摘要：

  A novel direct C7-arylation of indazoles with iodoaryls is described using Pd(OAc)2 as catalyst, 1,10-phenanthroline as ligand, and K2CO3 as base in refluxing DMA. Direct C7-arylation of 3-substituted 1H-indazole containing an EWG on the arene ring gave the expected products in good isolated yields. In addition, a one-pot Suzuki-Miyaura/arylation procedure leading to C3,C7-diarylated indazoles has been developed.

  DOI：

  10.1021/jo500876q

文献信息

• Bromide-assisted chemoselective Heck reaction of 3-bromoindazoles under high-speed ball-milling conditions: synthesis of axitinib
  作者：Jingbo Yu、Zikun Hong、Xinjie Yang、Yu Jiang、Zhijiang Jiang、Weike Su

  DOI：10.3762/bjoc.14.66

  日期：——

  A mechanically-activated chemoselective Heck coupling for the synthesis of 3-vinylindazoles has been developed with the aid of catalytic amounts of TBAB and NaBr as both dehalogenation restrainer and grinding auxiliary. After tuning of the chemical conditions and mechanical parameters, a series of non-activated 3-bromoindazoles and a broad scope of olefins worked well to give the corresponding coupling products in good to excellent yields. A further application of this protocol was performed in a two-step mechanochemical Heck/Migita cross coupling, which provided a highly efficient route for the synthesis of axitinib.

  已开发出一种机械活化的化学选择性赫克偶联反应，用催化剂TBAB和NaBr作为去卤辅助剂和研磨辅助剂。在调整化学条件和机械参数后，一系列非活化的3-溴吲哚和广泛范围的烯烃表现良好，产率良好至优秀地给出了相应的偶联产物。该方案的进一步应用是在两步机械化学赫克/米吉塔交叉偶联反应中进行，为阿希替尼的合成提供了高效的途径。