9-(2-methylbenzoyl)-3,4-dimethyl-7,8-diethyl-dipyrrinone | 270928-61-5

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: 9-(2-methylbenzoyl)-3,4-dimethyl-7,8-diethyl-dipyrrinone
• 英文别名: (5Z)-5-[[3,4-diethyl-5-(2-methylbenzoyl)-1H-pyrrol-2-yl]methylidene]-3,4-dimethylpyrrol-2-one
• CAS: 270928-61-5
• 化学式: C₂₃H₂₆N₂O₂
• 分子量: 362.472
• InChiKey: PYGXIDRBBBNZFV-UNOMPAQXSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.49
• 重原子数：
  27.0
• 可旋转键数：
  5.0
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.3
• 拓扑面积：
  61.96
• 氢给体数：
  2.0
• 氢受体数：
  2.0

反应信息

• 作为反应物：
  描述：

  9-(2-methylbenzoyl)-3,4-dimethyl-7,8-diethyl-dipyrrinone 在 sodium tetrahydroborate 作用下， 以 异丙醇 为溶剂， 反应 2.0h， 以92%的产率得到9-(2-methylbenzyl)-3,4-dimethyl-7,8-diethyl-dipyrrinone
  参考文献：
  名称：

  Stereochemistry and Conformational Analysis of Hemirubin

  摘要：

  Intramolecularly hydrogen-bonded analogs of the natural bile pigment, bilirubin, are very scarce. Nuclear Overhauser effect NMR studies of the newest analog, a hemirubin (1), confirms intramolecular hydrogen bonding and a ridge-tile-shaped conformation. H-1 NMR studies of 1 at sufficiently low temperatures detect conformational enantiomerization, for which an activation barrier of Delta G(double dagger)similar to 16 kcal/mol at 25 degrees C in CDCl3 has been estimated. Evidence for the presence of dimeric association at low temperatures or high concentrations of 1 is found by the appearance of new sets of resonances, data from which may be used to calculate: Delta G degrees(298) (K) + 3.4 kca/mol, Delta H degrees - 5.6 kcal/mol and Delta S degrees -30.3 cal/deg/mol. (C) 2000 Elsevier Science Ltd. All rights reserved.

  DOI：

  10.1016/s0040-4020(00)00087-9
• 作为产物：
  描述：

  2,3-dimethyl-7,8-diethyl-10H-dipyrrin-1-one-9-carboxylic acid 在 potassium acetate 、 sodium acetate 、 四氯化锡 作用下， 以 二氯甲烷 为溶剂， 反应 4.67h， 生成 9-(2-methylbenzoyl)-3,4-dimethyl-7,8-diethyl-dipyrrinone
  参考文献：
  名称：

  Stereochemistry and Conformational Analysis of Hemirubin

  摘要：

  Intramolecularly hydrogen-bonded analogs of the natural bile pigment, bilirubin, are very scarce. Nuclear Overhauser effect NMR studies of the newest analog, a hemirubin (1), confirms intramolecular hydrogen bonding and a ridge-tile-shaped conformation. H-1 NMR studies of 1 at sufficiently low temperatures detect conformational enantiomerization, for which an activation barrier of Delta G(double dagger)similar to 16 kcal/mol at 25 degrees C in CDCl3 has been estimated. Evidence for the presence of dimeric association at low temperatures or high concentrations of 1 is found by the appearance of new sets of resonances, data from which may be used to calculate: Delta G degrees(298) (K) + 3.4 kca/mol, Delta H degrees - 5.6 kcal/mol and Delta S degrees -30.3 cal/deg/mol. (C) 2000 Elsevier Science Ltd. All rights reserved.

  DOI：

  10.1016/s0040-4020(00)00087-9