4H-Pyrazolo[1,5-a]benzimidazole,2,3-dimethyl-(9CI) | 130436-65-6

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 苯并咪唑类
• 英文名称: 4H-Pyrazolo[1,5-a]benzimidazole,2,3-dimethyl-(9CI)
• 英文别名: 2,3-dimethyl-4H-pyrazolo<1.5-a>benzimidazole
• CAS: 130436-65-6
• 化学式: C₁₁H₁₁N₃
• 分子量: 185.228
• InChiKey: SCCJRSYMFVYSNA-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.43
• 重原子数：
  14.0
• 可旋转键数：
  0.0
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.18
• 拓扑面积：
  33.09
• 氢给体数：
  1.0
• 氢受体数：
  2.0

反应信息

• 作为产物：
  描述：

  2,3-tetramethylene-6,7-dimethyl-4-acetyl-4H-pyrazolo<1.5-a>benzimidazole 在 盐酸 作用下， 以 乙醇 为溶剂， 反应 0.5h， 以85%的产率得到4H-Pyrazolo[1,5-a]benzimidazole,2,3-dimethyl-(9CI)
  参考文献：
  名称：

  Ring contraction of 1,2,4-triazepino[2,3-a]benzimidazol-4-ones. New fused .beta.-lactams

  摘要：

  Isolation of uncommon fused tetracyclic beta-lactams 2 strongly supports a previously unconfirmed ionic mechanism for the ring contraction of nitrogen-bridged azolo-1,2,4-triazepin-3-ones in acetic anhydride. Procedures for the synthesis in good yields of substituted-pyrazolo[1,5-alpha]benzimidazoles from the corresponding [1,2,4]triazepino[2,3-alpha]benzimidazoles are reported.

  DOI：

  10.1021/jo00001a017

文献信息

• OPTICAL RECORDING MEDIUM AND METHOD OF RECORDING VISIBLE INFORMATION
  申请人：SETO Nobuo

  公开号：US20090022047A1

  公开（公告）日：2009-01-22

  The optical recording medium comprises a visible information recording layer comprising at least two dyes of the following dyes. R a1 to R b3 each independently denote a hydrogen atom or a monovalent substituent, R a2 and R a3 may bond together to form a five to seven-membered heterocyclic ring, A denotes a substituted or unsubstituted aliphatic group, substituted or unsubstituted aryl group, or substituted or unsubstituted heterocyclic group, n denotes 0, 1, 2, or 3. Za 21 and Za 22 each independently denote an atom group forming an acidic nucleus, Ma 21 to Ma 23 each independently denote a substituted or unsubstituted methine group, Ka 21 denotes an integer ranging from 0 to 3, and Q denotes a monovalent cation. A 1 =N—B 1 General formula (III) A 1 denotes a substituted or unsubstituted heterocyclic group, a substituted aliphatic group, or a substituted or unsubstituted carbocyclic group, and B 1 denotes a substituted or unsubstituted heterocyclic group or a substituted or unsubstituted aryl group.