9-Methoxy-5,6-dimethyl-3-phenethyl-dipyrrolo[1,2-a;1',2'-c]pyrimidine | 753470-62-1

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: 9-Methoxy-5,6-dimethyl-3-phenethyl-dipyrrolo[1,2-a;1',2'-c]pyrimidine
• 英文别名: 12-Methoxy-7,8-dimethyl-5-(2-phenylethyl)-1,6-diazatricyclo[7.3.0.02,6]dodeca-2,4,7,9,11-pentaene
• CAS: 753470-62-1
• 化学式: C₂₁H₂₂N₂O
• 分子量: 318.418
• InChiKey: OQYQIDBKFCTWGF-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  6.7
• 重原子数：
  24
• 可旋转键数：
  4
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.24
• 拓扑面积：
  19.1
• 氢给体数：
  0
• 氢受体数：
  1

反应信息

• 作为反应物：
  描述：

  9-Methoxy-5,6-dimethyl-3-phenethyl-dipyrrolo[1,2-a;1',2'-c]pyrimidine 在 氨 、 sodium 作用下， 以 四氢呋喃 为溶剂， 以100%的产率得到(5R,6R)-9-Methoxy-5,6-dimethyl-3-phenethyl-5,6-dihydro-dipyrrolo[1,2-a;1',2'-c]pyrimidine
  参考文献：
  名称：

  Selective Partial Reduction of Various Heteroaromatic Compounds with Bridgehead Nitrogen via Birch Reduction Protocol

  摘要：

  [GRAPHICS]For the first time various heteroaromatic compounds with bridgehead nitrogen, including indolizines, bispyrrolopyrimidines, pyrroloquinolines, pyrroloisoquinolines, and bispyrrolopyrazines, were selectively partially reduced under Birch reduction conditions. It was found that the double bond in the fused heterocycles which possesses the highest LUMO density can be selectively reduced under these conditions. Indolizine 6, containing an ester group at C-6, was reductively alkylated to give dihydroindolizines 8 and 9 possessing a quaternary carbon center in good yield. It was found that ambident substrate 12, under Birch reduction conditions, underwent smooth partial reduction to give 4,5-dihydroquinoline 14 as a sole product with no evidence of reduction of the side chain olefin. It was also shown that electron-rich pyrroloisoquinoline 15, which cannot be reduced via catalytic hydrogenation conditions, was efficiently transformed into its dihydrocounterpart 16 by using the Birch reduction protocol. Finally, it was shown that various fused diazines were smoothly and stereoselectively reduced under Birch reduction conditions to give trans-4,5-disubstituted dihydropyrimidines 30 and 32 in virtually quantitative yields.

  DOI：

  10.1021/jo0479157
• 作为产物：
  描述：

  5,6-二甲基尿嘧啶 在 bis-triphenylphosphine-palladium(II) chloride 、 copper(l) iodide 、 potassium carbonate 、 copper(I) bromide 、 三溴氧磷 作用下， 以 N,N-二甲基乙酰胺 、 三乙胺 、 乙腈 为溶剂， 反应 114.0h， 生成 9-Methoxy-5,6-dimethyl-3-phenethyl-dipyrrolo[1,2-a;1',2'-c]pyrimidine
  参考文献：
  名称：

  通过双环异构化还原双炔基嘧啶对（±）-四氢萘啶T6及其类似物的高度非对映选择性

  摘要：

  已经开发出一种新的，短而有效的三环生物碱方法，涉及双炔基嘧啶3a - m的双环异构化-还原。通过二溴嘧啶1的区域选择性顺序Sonogashira偶联反应可轻松制备必要的双炔基嘧啶3a - m。双-炔基嘧啶3a - m通过Cu（I）辅助的双环异构化反应转化为5-6-5三环杂芳族核4a - m。反应逐步进行，这通过分离单热解中间体5得到证实。。5的结构通过2D NMR和独立合成进行分配。在标准条件下5的环异构化得到三环4g，收率89％。双吡咯并嘧啶4d，4g和4i在酸性介质中的PtO 2催化氢化反应提供了稳定的am鎓衍生物11a，11b和11c。用LiAlH 4进一步还原后者，使得（±）-四皂角T6及其类似物具有高度非对映选择性的全合成。

  DOI：

  10.1021/jo049259g

文献信息

• Selective Partial Reduction of Various Heteroaromatic Compounds with Bridgehead Nitrogen via Birch Reduction Protocol
  作者：Joseph T. Kim、Vladimir Gevorgyan

  DOI：10.1021/jo0479157

  日期：2005.3.1

  [GRAPHICS]For the first time various heteroaromatic compounds with bridgehead nitrogen, including indolizines, bispyrrolopyrimidines, pyrroloquinolines, pyrroloisoquinolines, and bispyrrolopyrazines, were selectively partially reduced under Birch reduction conditions. It was found that the double bond in the fused heterocycles which possesses the highest LUMO density can be selectively reduced under these conditions. Indolizine 6, containing an ester group at C-6, was reductively alkylated to give dihydroindolizines 8 and 9 possessing a quaternary carbon center in good yield. It was found that ambident substrate 12, under Birch reduction conditions, underwent smooth partial reduction to give 4,5-dihydroquinoline 14 as a sole product with no evidence of reduction of the side chain olefin. It was also shown that electron-rich pyrroloisoquinoline 15, which cannot be reduced via catalytic hydrogenation conditions, was efficiently transformed into its dihydrocounterpart 16 by using the Birch reduction protocol. Finally, it was shown that various fused diazines were smoothly and stereoselectively reduced under Birch reduction conditions to give trans-4,5-disubstituted dihydropyrimidines 30 and 32 in virtually quantitative yields.
• Highly Diastereoselective Approach toward (±)-Tetraponerine T6 and Analogues via the Double Cycloisomerization−Reduction of Bis-alkynylpyrimidines
  作者：Joseph T. Kim、Jason Butt、Vladimir Gevorgyan

  DOI：10.1021/jo049259g

  日期：2004.8.1

  A new, short, and efficient approach toward tricyclic alkaloids, involving the double cycloisomerization−reduction of bis-alkynylpyrimidines 3a−m, has been developed. The requisite bis-alkynylpyrimidines 3a−m were readily prepared via regioselective sequential Sonogashira coupling reactions of dibromopyrimidines 1. Bis-alkynylpyrimidines 3a−m were converted into the 5−6−5 tricyclic heteroaromatic cores

  已经开发出一种新的，短而有效的三环生物碱方法，涉及双炔基嘧啶3a - m的双环异构化-还原。通过二溴嘧啶1的区域选择性顺序Sonogashira偶联反应可轻松制备必要的双炔基嘧啶3a - m。双-炔基嘧啶3a - m通过Cu（I）辅助的双环异构化反应转化为5-6-5三环杂芳族核4a - m。反应逐步进行，这通过分离单热解中间体5得到证实。。5的结构通过2D NMR和独立合成进行分配。在标准条件下5的环异构化得到三环4g，收率89％。双吡咯并嘧啶4d，4g和4i在酸性介质中的PtO 2催化氢化反应提供了稳定的am鎓衍生物11a，11b和11c。用LiAlH 4进一步还原后者，使得（±）-四皂角T6及其类似物具有高度非对映选择性的全合成。