1a,7a-Dihydro-6-methoxy-1a-phenyl-7H-oxireno<1>benzopyran-7-one | 136764-56-2

• 分子结构分类: 有机化合物 - 苯丙烷和聚酮 - 黄酮类化合物
• 英文名称: 1a,7a-Dihydro-6-methoxy-1a-phenyl-7H-oxireno<1>benzopyran-7-one
• 英文别名: 6-methoxy-1a-phenyl-7aH-oxireno[2,3-b]chromen-7-one
• CAS: 136764-56-2
• 化学式: C₁₆H₁₂O₄
• 分子量: 268.269
• InChiKey: FHZWDSUSRHIKAM-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.6
• 重原子数：
  20
• 可旋转键数：
  2
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.19
• 拓扑面积：
  48.1
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为产物：
  描述：

  5-甲氧基黄酮 在 二甲基二环氧乙烷 作用下， 以 二氯甲烷 、 丙酮 为溶剂， 反应 26.0h， 以100%的产率得到1a,7a-Dihydro-6-methoxy-1a-phenyl-7H-oxireno<1>benzopyran-7-one
  参考文献：
  名称：

  Epoxidation of flavones by dimethyldioxirane

  摘要：

  The synthesis of epoxides 2 by epoxidation of flavones 1 with isolated dimethyldioxirane (as acetone solution) at subambient temperatures is reported. These labile epoxides were isolated and completely characterized by UV, IR, H-1 and C-13 NMR, MS, and C, H analyses. Warming to room temperature led to rearrangement to afford quantitatively the 3-hydroxyflavones 3b,h,i,n. Treatment of the epoxides 2b,f with methanol led to the 3-hydroxy-2-methoxyflavanones 4b,f as a mixture of cis and trans isomers.

  DOI：

  10.1021/jo00026a020

文献信息

• Epoxidation of flavones by dimethyldioxirane
  作者：Waldemar Adam、Dieter Golsch、Lazaros Hadjiarapoglou、Tamas Patonay

  DOI：10.1021/jo00026a020

  日期：1991.12

  The synthesis of epoxides 2 by epoxidation of flavones 1 with isolated dimethyldioxirane (as acetone solution) at subambient temperatures is reported. These labile epoxides were isolated and completely characterized by UV, IR, H-1 and C-13 NMR, MS, and C, H analyses. Warming to room temperature led to rearrangement to afford quantitatively the 3-hydroxyflavones 3b,h,i,n. Treatment of the epoxides 2b,f with methanol led to the 3-hydroxy-2-methoxyflavanones 4b,f as a mixture of cis and trans isomers.