6,8-Dibromo-2-(4-chloro-phenyl)-3-nitro-chromen-4-one | 143468-28-4

• 分子结构分类: 有机化合物 - 苯丙烷和聚酮 - 黄酮类化合物
• 英文名称: 6,8-Dibromo-2-(4-chloro-phenyl)-3-nitro-chromen-4-one
• 英文别名: 6,8-Dibromo-2-(4-chlorophenyl)-3-nitrochromen-4-one
• CAS: 143468-28-4
• 化学式: C₁₅H₆Br₂ClNO₄
• 分子量: 459.478
• InChiKey: UWMORHSRLDUBHY-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  5.2
• 重原子数：
  23
• 可旋转键数：
  1
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  72.1
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为产物：
  描述：

  (2S,3R)-6,8-Dibromo-3-chloro-2-(4-chloro-phenyl)-3-nitro-chroman-4-one 在 1,8-二氮杂双环[5.4.0]十一碳-7-烯 作用下， 以 四氢呋喃 为溶剂， 反应 0.33h， 以78%的产率得到6,8-Dibromo-2-(4-chloro-phenyl)-3-nitro-chromen-4-one
  参考文献：
  名称：

  Synthesis of 2-Aryl-3-nitro-4H-1-benzopyran-4-ones

  摘要：

  2-Aryl-3-nitro-4H-1-benzopyran-4-ones (or 3-nitroflavones) 3 are conveniently prepared in good yields using a two-step approach starting from 2-aryl-3-chloro-3,4-dihydro-4-hydroxy-3-nitro-2H-1-benzopyrans 1. A general synthesis of the novel 2-aryl-3-chloro-2,3-dihydro-3-nitro-4H-1-benzopyran-4-ones 2 employed as intermediates in the procedure is described.

  DOI：

  10.1055/s-1992-26198

文献信息

• Synthesis of 2-Aryl-3-nitro-4<i>H</i>-1-benzopyran-4-ones
  作者：Daniel Dauzonne、Cyrille Grandjean

  DOI：10.1055/s-1992-26198

  日期：——

  2-Aryl-3-nitro-4H-1-benzopyran-4-ones (or 3-nitroflavones) 3 are conveniently prepared in good yields using a two-step approach starting from 2-aryl-3-chloro-3,4-dihydro-4-hydroxy-3-nitro-2H-1-benzopyrans 1. A general synthesis of the novel 2-aryl-3-chloro-2,3-dihydro-3-nitro-4H-1-benzopyran-4-ones 2 employed as intermediates in the procedure is described.

  2-Aryl-3-nitro-4H-1-benzopyran-4-ones (or 3-nitroflavones) 3 are conveniently prepared in good yields using a two-step approach starting from 2-aryl-3-chloro-3,4-dihydro-4-hydroxy-3-nitro-2H-1-benzopyrans 1. A general synthesis of the novel 2-aryl-3-chloro-2,3-dihydro-3-nitro-4H-1-benzopyran-4-ones 2 employed as intermediates in the procedure is described.