methyl 6-methylthieno[2,3-b]quinoline-2-carboxylate | 918145-25-2

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 喹啉及其衍生物
• 英文名称: methyl 6-methylthieno[2,3-b]quinoline-2-carboxylate
• CAS: 918145-25-2
• 化学式: C₁₄H₁₁NO₂S
• mdl: MFCD09832491
• 分子量: 257.313
• InChiKey: HQCPJNORMWWLKL-UHFFFAOYSA-N

物化性质

• 熔点：
  246-249 °C(Solv: ethanol (64-17-5))
• 沸点：
  429.8±40.0 °C(Predicted)
• 密度：
  1.322±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  4.1
• 重原子数：
  18
• 可旋转键数：
  2
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.14
• 拓扑面积：
  67.4
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为产物：
  描述：

  2-mercapto-6-methylquinoline-3-carbaldehyde 在 potassium carbonate 、 三氯氧磷 作用下， 以 N,N-二甲基甲酰胺 、 丙酮 为溶剂， 生成 methyl 6-methylthieno[2,3-b]quinoline-2-carboxylate
  参考文献：
  名称：

  Chemistry of Substituted Quinolines: Thieno[2,3- b ] and Thiopyrano[2,3- b ]quinolines

  摘要：

  The reaction of 3-formyl-2-chloroquinolines with thioglycolic acid afforded a mixture of uncyclized [(3-formylquinolin-2-yl)thio]acetic acid in a 60-70% yield and cyclized thieno[2,3-b]quinoline-2-carboxylic acids in a 30-40% yield, respectively. The uncyclized compounds on refluxing with POCl3 in various alcoholic media gave [(3-formylquinolin-2-yl)thio]acetates. Further cyclization was achieved by refluxing them with dimethylformamide (DMF) to produce thieno[2,3-b]quinoline derivatives. On the other hand, the reaction of 3-formyl-2-mercaptoquinolines with chloroacetyl chloride in DMF gave 3-chloro-2H-thiopyrano[2,3-b]quinolin-2-ones. The structures of all the newly synthesized compounds were characterized on the basis of elemental analysis, IR, H-1 NMR, and mass spectral data.

  DOI：

  10.1080/10426500601088846