6,7'-ditert-butyl-4,4,5',5'-tetramethylspiro[1H-quinoline-3,3'-pyrano[3,4-b]quinoline]-1',2-dione | 1334553-72-8

• 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: 6,7'-ditert-butyl-4,4,5',5'-tetramethylspiro[1H-quinoline-3,3'-pyrano[3,4-b]quinoline]-1',2-dione
• CAS: 1334553-72-8
• 化学式: C₃₂H₃₈N₂O₃
• 分子量: 498.665
• InChiKey: CRMVZHGPEVTUCP-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  7.8
• 重原子数：
  37
• 可旋转键数：
  2
• 环数：
  5.0
• sp3杂化的碳原子比例：
  0.47
• 拓扑面积：
  67.8
• 氢给体数：
  1
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  6,7'-ditert-butyl-4,4,5',5'-tetramethylspiro[1H-quinoline-3,3'-pyrano[3,4-b]quinoline]-1',2-dione 在 silica gel 作用下， 以 乙醚 、 二氯甲烷 为溶剂， 反应 20.0h， 以30%的产率得到6,6'-ditert-butyl-4,4,4',4'-tetramethylspiro[1H-quinoline-3,2'-furo[2,3-b]quinoline]-2-one
  参考文献：
  名称：

  Oxidation of Annelated Diarylamines: Analysis of Reaction Pathways to Nitroxide Diradical and Spirocyclic Products

  摘要：

  Oxidation of diaryldiamine 2, a tetrahydrodiazapentacene derivative, provides diarylnitroxide diradical 1 accompanied by an intermediate nitroxide monoradical and a multitude of isolable diamagnetic products. DFT-computed tensors for EPR spectra and paramagnetic H-1 NMR isotropic shifts for nitroxide diradical 1 show good agreement with the experimental EPR spectra in rigid matrices and paramagnetic H-1 NMR spectra in solution, respectively. Examination of the diamagnetic products elucidates their formation via distinct pathways involving C-O bond-forming reactions, including Baeyer-Villiger-type oxidations. An unusual diiminoketone structure and two spirocyclic structures of the predominant diamagnetic products are confirmed by either X-ray crystallography or correlations between DFT-computed and experimental spectroscopic data such as H-1, C-13, and N-15 NMR chemical shifts and electronic absorption spectra.

  DOI：

  10.1021/jo2017923
• 作为产物：
  描述：

  2,10-Di-tert-butyl-12,12,14,14-tetramethyl-5,7,12,14-tetrahydro-5,7-diaza-pentacene 在 二甲基二环氧乙烷 、 间氯过氧苯甲酸 作用下， 以 二氯甲烷 、 丙酮 为溶剂， 反应 3.0h， 生成 6,7'-ditert-butyl-4,4,5',5'-tetramethylspiro[1H-quinoline-3,3'-pyrano[3,4-b]quinoline]-1',2-dione
  参考文献：
  名称：

  Oxidation of Annelated Diarylamines: Analysis of Reaction Pathways to Nitroxide Diradical and Spirocyclic Products

  摘要：

  Oxidation of diaryldiamine 2, a tetrahydrodiazapentacene derivative, provides diarylnitroxide diradical 1 accompanied by an intermediate nitroxide monoradical and a multitude of isolable diamagnetic products. DFT-computed tensors for EPR spectra and paramagnetic H-1 NMR isotropic shifts for nitroxide diradical 1 show good agreement with the experimental EPR spectra in rigid matrices and paramagnetic H-1 NMR spectra in solution, respectively. Examination of the diamagnetic products elucidates their formation via distinct pathways involving C-O bond-forming reactions, including Baeyer-Villiger-type oxidations. An unusual diiminoketone structure and two spirocyclic structures of the predominant diamagnetic products are confirmed by either X-ray crystallography or correlations between DFT-computed and experimental spectroscopic data such as H-1, C-13, and N-15 NMR chemical shifts and electronic absorption spectra.

  DOI：

  10.1021/jo2017923

文献信息

• Oxidation of Annelated Diarylamines: Analysis of Reaction Pathways to Nitroxide Diradical and Spirocyclic Products
  作者：Andrzej Rajca、Kouichi Shiraishi、Przemysław J. Boratyński、Maren Pink、Makoto Miyasaka、Suchada Rajca

  DOI：10.1021/jo2017923

  日期：2011.10.21

  Oxidation of diaryldiamine 2, a tetrahydrodiazapentacene derivative, provides diarylnitroxide diradical 1 accompanied by an intermediate nitroxide monoradical and a multitude of isolable diamagnetic products. DFT-computed tensors for EPR spectra and paramagnetic H-1 NMR isotropic shifts for nitroxide diradical 1 show good agreement with the experimental EPR spectra in rigid matrices and paramagnetic H-1 NMR spectra in solution, respectively. Examination of the diamagnetic products elucidates their formation via distinct pathways involving C-O bond-forming reactions, including Baeyer-Villiger-type oxidations. An unusual diiminoketone structure and two spirocyclic structures of the predominant diamagnetic products are confirmed by either X-ray crystallography or correlations between DFT-computed and experimental spectroscopic data such as H-1, C-13, and N-15 NMR chemical shifts and electronic absorption spectra.