4b,5-dihydro-4b-methyl-11H-isoindolo<2,1-a>benzimidazol-11-one | 6029-64-7

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 异吲哚及其衍生物
• 英文名称: 4b,5-dihydro-4b-methyl-11H-isoindolo<2,1-a>benzimidazol-11-one
• 英文别名: 5b-methyl-5b,6-dihydro-1H-isoindolo<1,2-a>benzimidazol-1-one；4b-methyl-4b,11-dihydro-5H-benzo[4,5]imidazo[2,1-a]isoindol-11-one；4b-methyl-4b,5-dihydro-11H-benzo[4,5]imidazo[2,1-a]isoindol-11-one；4b-methyl-4b,5-dihydro-benzo[4,5]imidazo[2,1-a]isoindol-11-one；4b-methyl-5H-isoindolo[2,1-a]benzimidazol-11-one
• CAS: 6029-64-7
• 化学式: C₁₅H₁₂N₂O
• 分子量: 236.273
• InChiKey: SQCXGPKAYHPKFP-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.6
• 重原子数：
  18
• 可旋转键数：
  0
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.13
• 拓扑面积：
  32.3
• 氢给体数：
  1
• 氢受体数：
  2

反应信息

• 作为产物：
  描述：

  2-乙酰苯甲酸 、 邻苯二胺 以 甲苯 为溶剂， 反应 6.0h， 以58%的产率得到4b,5-dihydro-4b-methyl-11H-isoindolo<2,1-a>benzimidazol-11-one
  参考文献：
  名称：

  4b，5-二氢-4b-甲基-11 H-异吲哚并[2,1- a ]苯并咪唑-11-酮和2,3,3a，4-四氢-3a-甲基-1H-吡咯烷酮的合成及光谱表征[1,2- a ]苯并咪唑-1-酮

  摘要：

  4b，5-dihydro-4b-methyl-11 H -isoindolo [2,1- a ] benzimidazol-11-one I and 2,3,3a的某些衍生物的1 H和13 C nmr光谱的完全分配本文通过一维和二维NMR技术的结合报道了，4-四氢-3a-甲基-1 H-吡咯并[1,2 - a ]-苯并咪唑-1-酮II。由此制备了八种化合物，其中三种是新颖的，即2a，3、6。还获得了它们的紫外光谱和红外光谱。另外，还报道了化合物1、2a，2b，3和6的质谱。

  DOI：

  10.1002/jhet.5570310106

文献信息

• Catalyst-free one-pot cascade cyclization: An efficient synthesis of isoindolobenzoxazinones and isoindoloquinazolinones derivatives
  作者：Wenzhong Li、Baibai Wan、Ran Shi、Si Chen、Jiazhu Li、Fangzhen Wang、Hexu Niu、Xin-Ming Xu、Wei-Li Wang

  DOI：10.1016/j.tet.2021.132571

  日期：2022.1

  A practical and efficient catalyst-free cascade cyclization reaction of 2-acylbenzoic acids with various amino alcohols or diamines was developed. This protocol provides a powerful and straightforward method for the one-pot synthesis of diverse isoindolobenzoxazinones, isoindoloquinazolinones and their derivatives. The synthetic strategy evades the use of catalyst, shows a broad substrate scope and

  开发了一种实用高效的2-酰基苯甲酸与各种氨基醇或二胺的无催化剂级联环化反应。该协议为各种异吲哚苯并恶嗪酮、异吲哚喹唑啉酮及其衍生物的一锅合成提供了一种强大而直接的方法。该合成策略避免了催化剂的使用，显示出广泛的底物范围，并且可以以克级规模进行。
• Au(I)-Catalyzed Cascade Reaction Involving Formal Double Hydroamination of Alkynes Bearing Tethered Carboxylic Groups: An Easy Access to Fused Dihydrobenzimidazoles and Tetrahydroquinazolines
  作者：Nitin T. Patil、Anil Kumar Mutyala、Pediredla G. V. V. Lakshmi、Balakrishna Gajula、Balasubramanian Sridhar、Gurava Reddy Pottireddygari、Tadikamalla Prabhakar Rao

  DOI：10.1021/jo1013228

  日期：2010.9.3

  A process involving gold(I)-catalyzed formal double hydroamination of alkynes, bearing a tethered carboxylic group, for the synthesis of fused dihydrobenzimidazoles and tetrahydroquinazolines has been developed. A series of transition metal catalysts have been screened for this transformation, and a catalyst system consisting of Ph3PAuCl (1 mol %) and AgOTf (1 mol %) was found to be the best. The procedure entails the reaction of easily accessible starting materials such as alkynoic acids and 1,2-diaminobenzenes/2-aminobenzylamines in the presence of the catalyst in 1,2-dichloroethane at 100 degrees C. In the case of alpha-substituted alkynoic acids, the corresponding products were obtained in high diastereoselectivities; the structure of the diastereomers has been unambiguously characterized by NMR techniques. The mechanism of the reaction is discussed, and the origin of the diastereoselectivities is addressed. It was observed that under the microwave irradiation conditions, the reaction time is significantly shortened (0.5 h).
• Synthesis of Cytotoxic Pyrrolo[1,2-a]-benzimidazol-1-ones
  作者：John A. Hadfield、Vasilios H. Pavlidis、John R. A. Roffey

  DOI：10.1080/00397919508013833

  日期：1995.5

  Several pyrrolo[1,2-a]benzimidazol-1-ones have been synthesised and shown to be cytotoxic to two mammalian cell lines. A synthesis of the novel ring system isoindolo[1,2-a]benzimidazol-1-one is described.
• US4058529A
  申请人：——

  公开号：US4058529A

  公开（公告）日：1977-11-15