4-mehtyl-2-phenylpyrano[3,2-c]chromen-5(4H)-one | 1444007-19-5

• 分子结构分类: 有机化合物 - 苯丙烷和聚酮 - 香豆素及其衍生物
• 英文名称: 4-mehtyl-2-phenylpyrano[3,2-c]chromen-5(4H)-one
• CAS: 1444007-19-5
• 化学式: C₁₉H₁₄O₃
• 分子量: 290.318
• InChiKey: ODCMTWLEAJRXCM-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.33
• 重原子数：
  22.0
• 可旋转键数：
  1.0
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.11
• 拓扑面积：
  39.44
• 氢给体数：
  0.0
• 氢受体数：
  3.0

反应信息

• 作为产物：
  描述：

  4-hydroxy-3-(4-phenylbut-3-yn-2-yl)-2H-coumarin 在 N-甲基吗啉 、 copper(I) bromide 作用下， 以 二氯甲烷 为溶剂， 反应 4.0h， 以76%的产率得到4-mehtyl-2-phenylpyrano[3,2-c]chromen-5(4H)-one
  参考文献：
  名称：

  Al(OTf)3-Catalyzed Preparation of 4-Hydroxy-3-propargylic ­Coumarins and Subsequent Regioselective Cyclization towards Furo- or Pyrano[3,2-c]coumarins

  摘要：

  An efficient and economical approach to functionalized furo[3,2-c]coumarin and pyrano[3,2-c]coumarin derivatives has been developed from 4-hydroxy-3-(prop-2-ynyl)coumarin derivatives through organocatalysis or metallo-organocatalysis. Selective 5-exo-dig' or 6-endo-dig' cyclization of the 4-hydroxy-3-(prop-2-ynyl)coumarin substrates could be achieved under organocatalytic {1,8-diazabicyclo[5.4.0]undec-7-ene} or metallo-organocatalytic (N-methylmorpholine/CuBr) conditions, respectively, to yield potentially bioactive heterocycles in excellent yields.

  DOI：

  10.1055/s-0034-1379971

文献信息

• Bi(OTf)3-catalyzed solvent-free synthesis of pyrano[3,2-c]coumarins through a tandem addition/annulation reaction between chalcones and 4-hydroxycoumarins
  作者：Mukut Gohain、Johannes H. van Tonder、Barend C.B. Bezuidenhoudt

  DOI：10.1016/j.tetlet.2013.05.008

  日期：2013.7

  A Bi(OTf)3-catalyzed tandem addition/annulation reaction is described in order to synthesize pyrano[3,2-c]coumarins under solvent-free conditions. Substituted/unsubstituted chalcones were conveniently condensed with various 4-hydroxycoumarins by means of this environmentally benign method which produces water as the only side product.

  描述了Bi（OTf）3催化的串联加成/环合反应，以便在无溶剂条件下合成吡喃并[3,2- c ]香豆素。借助于这种环境友好的方法，取代的/未取代的查耳酮方便地与各种4-羟基香豆素缩合，该方法产生水作为唯一的副产物。