6-Methyl-3'-chloroflavone | 138290-65-0

• 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: 6-Methyl-3'-chloroflavone
• 英文别名: 4H-1-Benzopyran-4-one, 2-(3-chlorophenyl)-6-methyl-；2-(3-chlorophenyl)-6-methylchromen-4-one
• CAS: 138290-65-0
• 化学式: C₁₆H₁₁ClO₂
• 分子量: 270.715
• InChiKey: DTEQXZYFUZPKPY-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.6
• 重原子数：
  19
• 可旋转键数：
  1
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.06
• 拓扑面积：
  26.3
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  6-Methyl-3'-chloroflavone 在 二甲基二环氧乙烷 作用下， 以 二氯甲烷 、 丙酮 为溶剂， 反应 37.0h， 以100%的产率得到1a,7a-Dihydro-5-methyl-1a-(3-chlorophenyl)-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
• 作为产物：
  描述：

  2-羟基-5-甲基苯乙酮 在 吡啶 、 氢氧化钾 、 硫酸 、 溶剂黄146 作用下， 以 吡啶 为溶剂， 生成 6-Methyl-3'-chloroflavone
  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

• Visible light-induced deoxygenation/cyclization of salicylic acid derivatives and aryl acetylene for the synthesis of flavonoids
  作者：Xiaodong Fan、Chaoyin He、Mengmeng Ji、Xinhui Sun、Huan Luo、Chao Li、Huixin Tong、Weiya Zhang、Zhizhong Sun、Wenyi Chu

  DOI：10.1039/d2cc01538b

  日期：——

  A visible-light-induced photocatalytic strategy for the synthesis of flavonoids has been developed through the deoxygenative/cyclization reaction of salicylic acid derivatives with aryl acetylene using diphenyl sulfide as an O-transfer reagent. Based on the controlled experiments, the mechanism of visible-light-induced free radical coupling cyclization was proposed. The protocol obtained 51 flavonoids

  通过使用二苯硫醚作为氧转移试剂，水杨酸衍生物与芳基乙炔的脱氧/环化反应，开发了一种可见光诱导的黄酮类化合物合成光催化策略。在对照实验的基础上，提出了可见光诱导自由基偶联环化的机理。该方案以良好的收率获得了51种黄酮类化合物，并已成功应用于一些天然黄酮类化合物的合成。