4-(3,3-diethoxypropyl)coumarin

• 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-(3,3-diethoxypropyl)coumarin
• 英文别名: 4-(3,3-Diethoxypropyl)chromen-2-one
• 化学式: C₁₆H₂₀O₄
• 分子量: 276.332
• InChiKey: UXIFVHMSFBBANY-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.7
• 重原子数：
  20
• 可旋转键数：
  7
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.44
• 拓扑面积：
  44.8
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为产物：
  描述：

  丙烯醛缩二乙醇 、 4-(三氟甲基磺酰氧基)香豆素 在 Ph(PPh₃)4 potassium phosphate 、 9-borabicyclo[3.3.1]nonane dimer 作用下， 生成 4-(3,3-diethoxypropyl)coumarin
  参考文献：
  名称：

  Palladium-catalyzed cross-coupling reaction of organoboron compounds with organic triflates

  摘要：

  The cross-coupling reaction of 9-alkyl-9-borabicyclo[3.3.1]nonane (9-R-9-BBN), 1-alkenyl-1,3,2-benzodioxaborole, or aryl boronic acid with 1-alkenyl or aryl triflates in the presence of K3PO4 (1.5 equiv) and a catalytic amount of Pd(PPh3)4 or Cl2Pd(dppf) resulted in high yields. The reaction conditions are sufficiently mild so that a variety of functionalized alkenes, alkadienes, and arenes are readily obtained. The utility of the present reaction was demonstrated by the cyclization of omega-alkenyl triflates leading to a benzo-fused cycloalkene and bicyclic alkene via a hydroboration-intramolecular coupling sequence.

  DOI：

  10.1021/jo00060a041

文献信息

• Palladium-catalyzed cross-coupling reaction of organoboron compounds with organic triflates
  作者：Takayuki Ohe、Norio Miyaura、Akira Suzuki

  DOI：10.1021/jo00060a041

  日期：1993.4

  The cross-coupling reaction of 9-alkyl-9-borabicyclo[3.3.1]nonane (9-R-9-BBN), 1-alkenyl-1,3,2-benzodioxaborole, or aryl boronic acid with 1-alkenyl or aryl triflates in the presence of K3PO4 (1.5 equiv) and a catalytic amount of Pd(PPh3)4 or Cl2Pd(dppf) resulted in high yields. The reaction conditions are sufficiently mild so that a variety of functionalized alkenes, alkadienes, and arenes are readily obtained. The utility of the present reaction was demonstrated by the cyclization of omega-alkenyl triflates leading to a benzo-fused cycloalkene and bicyclic alkene via a hydroboration-intramolecular coupling sequence.