trimethyl 4-oxo-5-acetonyl-5-hydroxy-4,5-dihydro-1H-pyrrolo<2,3-f>quinoline-2,7,9-tricarboxylate | 139975-73-8

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 喹啉及其衍生物
• 英文名称: trimethyl 4-oxo-5-acetonyl-5-hydroxy-4,5-dihydro-1H-pyrrolo<2,3-f>quinoline-2,7,9-tricarboxylate
• 英文别名: trimethyl 5-hydroxy-4-oxo-5-(2-oxopropyl)-1H-pyrrolo[2,3-f]quinoline-2,7,9-tricarboxylate
• CAS: 139975-73-8
• 化学式: C₂₀H₁₈N₂O₉
• 分子量: 430.371
• InChiKey: DQXIJZCRGWPYNV-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.5
• 重原子数：
  31
• 可旋转键数：
  8
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.3
• 拓扑面积：
  162
• 氢给体数：
  2
• 氢受体数：
  10

反应信息

• 作为产物：
  描述：

  4,5-二氧代-4,5-二氢-1H-吡咯[2,3-f]喹啉-2,7,9-三羧酸三甲酯 、 丙酮 在 三乙胺 作用下， 反应 2.0h， 以95%的产率得到trimethyl 4-oxo-5-acetonyl-5-hydroxy-4,5-dihydro-1H-pyrrolo<2,3-f>quinoline-2,7,9-tricarboxylate
  参考文献：
  名称：

  Synthesis and characterization of the 6-deaza derivative of coenzyme PQQ, methyl 4,5-dihydro-4,5-dioxobenz[g]indole-2-carboxylate

  摘要：

  The synthesis of the 6-deaza derivative of coenzyme PQQ, methyl 4,5-dihydro-4,5-dioxobenz[g]indole-2-carboxylate (4), is described, and its physical and chemical properties are compared to those of the trimethyl ester of PQQ (2) and the methyl ester of 7,9-didecarboxy PQQ (3). The synthesis of 4 was achieved by starting with 1-aminonaphthalene and constructing 2-carbomethoxybenz[g]indole (7) by a Japp-Klingemann reaction with methyl alpha-methylacetoacetate and a subsequent Fischer indolization reaction. The quinone function was introduced by a Fremy's salt oxidation of 5-aminoindole 9 which was prepared from 7 by regioselective nitration and catalytic hydrogenation. From the physical properties, it can be recognized that the peri pyridine nitrogen and the ester groups at the 7- and 9-positions considerably affect the electronic nature of the molecules. This is reflected on the reactivities of the quinones in the acetone-adduct formation, the reaction with phenylhydrazine, and the aerobic autorecycling oxidation of benzylamine. The significant roles of the pyridine nitrogen and the ester groups in these reactions are discussed.

  DOI：

  10.1021/jo00036a007

文献信息

• Synthesis and characterization of the 6-deaza derivative of coenzyme PQQ, methyl 4,5-dihydro-4,5-dioxobenz[g]indole-2-carboxylate
  作者：Shinobu Itoh、Yoshifumi Fukui、Masaki Ogino、Shigenobu Haranou、Mitsuo Komatsu、Yoshiki Ohshiro

  DOI：10.1021/jo00036a007

  日期：1992.5

  The synthesis of the 6-deaza derivative of coenzyme PQQ, methyl 4,5-dihydro-4,5-dioxobenz[g]indole-2-carboxylate (4), is described, and its physical and chemical properties are compared to those of the trimethyl ester of PQQ (2) and the methyl ester of 7,9-didecarboxy PQQ (3). The synthesis of 4 was achieved by starting with 1-aminonaphthalene and constructing 2-carbomethoxybenz[g]indole (7) by a Japp-Klingemann reaction with methyl alpha-methylacetoacetate and a subsequent Fischer indolization reaction. The quinone function was introduced by a Fremy's salt oxidation of 5-aminoindole 9 which was prepared from 7 by regioselective nitration and catalytic hydrogenation. From the physical properties, it can be recognized that the peri pyridine nitrogen and the ester groups at the 7- and 9-positions considerably affect the electronic nature of the molecules. This is reflected on the reactivities of the quinones in the acetone-adduct formation, the reaction with phenylhydrazine, and the aerobic autorecycling oxidation of benzylamine. The significant roles of the pyridine nitrogen and the ester groups in these reactions are discussed.