4-iodo-1,8-dimethoxy-3-phenyl-1H-pyrano[4,3-b]quinoline | 1256286-02-8

• 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: 4-iodo-1,8-dimethoxy-3-phenyl-1H-pyrano[4,3-b]quinoline
• CAS: 1256286-02-8
• 化学式: C₂₀H₁₆INO₃
• 分子量: 445.256
• InChiKey: JJIWJIKNQQTYLD-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.1
• 重原子数：
  25
• 可旋转键数：
  3
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.15
• 拓扑面积：
  40.6
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  丙烯酸丁酯 、 4-iodo-1,8-dimethoxy-3-phenyl-1H-pyrano[4,3-b]quinoline 在 trans-bis(triphenylphosphine)palladium dichloride 、 potassium carbonate 作用下， 以 N,N-二甲基甲酰胺 为溶剂， 反应 2.0h， 以72%的产率得到
  参考文献：
  名称：

  Pyrano[4,3-b]quinolines Library Generation via Iodocyclization and Palladium-Catalyzed Coupling Reactions

  摘要：

  Synthesis of a 80-member library of novel pyrano[4,3-b]quinoline in solution-Phase is reported. The key intermediate, 4-iodopyrano[4,3-b]quinolines were synthesized by the electropHic iodocyclization of corresponding oho-alkynyl ' aldehydes in good to excellent yields under mild reaction,conditions. Subsequently a diverse set of libraries was generated by employing palladium:catalyzed Suzuki-Miyauta, Heck, and Sonogashira coupling reactions on 4-iodopyrano[4,3-b]quinolines. In this:way,- a series of structurally different and biologically interesting molecules were obtained. Some of the selected compounds were screened against 3D7 strains of Plasmodium falciparum for antimalarial activity. Suzuki coupling products 6{3} and 6{21} and Heck coupling product 8{12} exhibit promising antimalarial activity.

  DOI：

  10.1021/co200100z
• 作为产物：
  描述：

  苯乙炔 在 trans-bis(triphenylphosphine)palladium dichloride 、 碘 、 potassium carbonate 、 三乙胺 作用下， 以 二氯甲烷 为溶剂， 反应 2.0h， 生成 4-iodo-1,8-dimethoxy-3-phenyl-1H-pyrano[4,3-b]quinoline
  参考文献：
  名称：

  Pyrano[4,3-b]quinolines Library Generation via Iodocyclization and Palladium-Catalyzed Coupling Reactions

  摘要：

  Synthesis of a 80-member library of novel pyrano[4,3-b]quinoline in solution-Phase is reported. The key intermediate, 4-iodopyrano[4,3-b]quinolines were synthesized by the electropHic iodocyclization of corresponding oho-alkynyl ' aldehydes in good to excellent yields under mild reaction,conditions. Subsequently a diverse set of libraries was generated by employing palladium:catalyzed Suzuki-Miyauta, Heck, and Sonogashira coupling reactions on 4-iodopyrano[4,3-b]quinolines. In this:way,- a series of structurally different and biologically interesting molecules were obtained. Some of the selected compounds were screened against 3D7 strains of Plasmodium falciparum for antimalarial activity. Suzuki coupling products 6{3} and 6{21} and Heck coupling product 8{12} exhibit promising antimalarial activity.

  DOI：

  10.1021/co200100z

文献信息

• Iodine-Mediated Solvent-Controlled Selective Electrophilic Cyclization and Oxidative Esterification of <i>o</i>-Alkynyl Aldehydes: An Easy Access to Pyranoquinolines, Pyranoquinolinones, and Isocumarins
  作者：Akhilesh K. Verma、Vineeta Rustagi、Trapti Aggarwal、Amit P. Singh

  DOI：10.1021/jo101526b

  日期：2010.11.19

  provides pyrano[4,3-b]quinolines 4a−f, via formation of cyclic iodonium intermediate Q; however, using alcohols as a solvent as well as nucleophile, o-alkynyl esters 5a−y were obtained selectively in good to excellent yields via formation of hypoiodide intermediate R. Subsequently, o-alkynyl esters were converted in to pyranoquinolinones 6a−i and isocoumarin 6j by electrophilic iodocyclization. This

  描述了碘在邻炔基醛的亲电碘环化中在不同溶剂中的化学选择性行为。与CH 2 Cl 2中的I 2与适当的亲核试剂反应生成邻炔基醛3a - t可以通过形成环碘鎓中间体Q生成吡喃并[4,3- b ]喹啉4a - f；但是，使用醇和亲核试剂作为溶剂，通过形成次碘化物中间体，选择性地以良好或优异的收率获得了邻炔基酯5a - y。[R 。随后，通过亲电碘环化将邻炔基酯转化为吡喃喹啉酮6a - i和异香豆素6j。这种发达的氧化酯化反应为从醛3n - p化学选择性合成酯5q - u而不氧化底物中存在的伯醇提供了新途径。
• Base-free NIS promoted electrophilic cyclization of alkynes: an efficient synthesis of iodo substituted pyrano[4,3-b]quinolines
  作者：Bhawana Singh、Atish Chandra、Seema Singh、Radhey M. Singh

  DOI：10.1016/j.tet.2010.10.081

  日期：2011.1

  A simple and mild procedure for the synthesis of iodo substituted 1H-pyrano[4,3-b]quinolines has been achieved using NIS reagent in the absence of base from 2-alkynylquinoline-3-carboxaldehydes via intramolecular electrophilic cyclization onto alkynes in good to excellent yields in a short duration of time. The reactions proceeded smoothly in a normal solvent in aerobic atmosphere at room temperature

  在没有碱的情况下，使用NIS试剂通过分子内亲电环化到炔烃上，从2-炔基喹啉3-羧醛中制得了一种简单，温和的合成碘代1 H-吡喃并[4,3- b ]喹啉的简单方法在短时间内获得出色的产量。反应在室温下于普通溶剂中在有氧气氛中顺利进行。喹啉或炔基部分上取代基的存在对环化反应速率没有影响。还讨论了钯催化的碘基向C–C键的转化。