7-methoxy-3,4-dimethyl-2H-chromene | 55439-25-3

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 苯并吡喃
• 英文名称: 7-methoxy-3,4-dimethyl-2H-chromene
• 英文别名: 7-Methoxy-3,4-dimethylchrom-3-en
• CAS: 55439-25-3
• 化学式: C₁₂H₁₄O₂
• 分子量: 190.242
• InChiKey: XKQHVSNXIHGGML-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.1
• 重原子数：
  14
• 可旋转键数：
  1
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.33
• 拓扑面积：
  18.5
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为产物：
  描述：

  4H-1-苯并吡唑-4-酮 在 正丁基锂 、 二异丙胺 作用下， 以 乙醚 为溶剂， 反应 15.25h， 生成 7-methoxy-3,4-dimethyl-2H-chromene
  参考文献：
  名称：

  Stereoselective syntheses of substituted pterocarpans with anti-HIV activity, and 5-aza-/5-thia-pterocarpan and 2-aryl-2,3-dihydrobenzofuran analogues

  摘要：

  Oxygenated pterocarpans and 5-azapterocarpans are prepared utilizing Lewis acid-promoted reactions of 2-alkoxy-1,4-benzoquinones with 2H-chromenes and N-tosyl-3,2-dihydroquinolines, respectively. Similarly, benzannulated analogues are prepared via reactions of 5-alkoxy-1,4-naphthoquinones with chromenes, and related 2-aryl-2,3-dihydrobenzofurans result from reactions of styrenes with the quinones. Syntheses of 5-thiapterocarpans are also described utilizing Pd(0)-coupling of o-chloromercuriophenols with 2H-chromenes. Copyright (C) 1996 Elsevier Science Ltd

  DOI：

  10.1016/0968-0896(96)00192-7

文献信息

• CHATTERJEA J. N.; PRASAD K.; PRASAD R.; SINHA N. D., INDIAN J. CHEM. <IJOC-AP>, 1974, 12, NO 12, 1256-1258
  作者：CHATTERJEA J. N.、 PRASAD K.、 PRASAD R.、 SINHA N. D.

  DOI：——

  日期：——
• Stereoselective syntheses of substituted pterocarpans with anti-HIV activity, and 5-aza-/5-thia-pterocarpan and 2-aryl-2,3-dihydrobenzofuran analogues
  作者：Thomas A. Engler、Kenneth O. LaTessa、Rajesh Iyengar、Wenying Chai、Konstantinos Agrios

  DOI：10.1016/0968-0896(96)00192-7

  日期：1996.10

  Oxygenated pterocarpans and 5-azapterocarpans are prepared utilizing Lewis acid-promoted reactions of 2-alkoxy-1,4-benzoquinones with 2H-chromenes and N-tosyl-3,2-dihydroquinolines, respectively. Similarly, benzannulated analogues are prepared via reactions of 5-alkoxy-1,4-naphthoquinones with chromenes, and related 2-aryl-2,3-dihydrobenzofurans result from reactions of styrenes with the quinones. Syntheses of 5-thiapterocarpans are also described utilizing Pd(0)-coupling of o-chloromercuriophenols with 2H-chromenes. Copyright (C) 1996 Elsevier Science Ltd