1-(2-氟-4-吡啶基)乙醇 | 137718-85-5

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 吡啶及其衍生物
• 中文名称: 1-(2-氟-4-吡啶基)乙醇
• 英文名称: 1-(2-Fluoro-4-pyridyl)ethanol
• 英文别名: 1-(2-Fluoropyridin-4-yl)ethanol
• CAS: 137718-85-5
• 化学式: C₇H₈FNO
• 分子量: 141.145
• InChiKey: WCALKLWHRCTHCR-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.8
• 重原子数：
  10
• 可旋转键数：
  1
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.29
• 拓扑面积：
  33.1
• 氢给体数：
  1
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  1-(2-氟-4-吡啶基)乙醇 在 manganese(IV) oxide 作用下， 以 甲苯 为溶剂， 反应 12.0h， 以85%的产率得到1-(2-氟吡啶-4-基)乙酮
  参考文献：
  名称：

  A new convergent route to 1-substituted ellipticines

  摘要：

  1-(2-Fluoro-4-pyridyl)ethanone was synthesized from 2-fluoropyridine and was ortho-lithiated after activation as the propylene glycol ketal. The resulting 3-lithio derivative was trapped by various electrophiles but reacted in low yield with N-protected 3-indolecarbaldehyde. Model compounds 1-[[[2-(diethylamino)ethyl]amino]-3-pyridyl]ethanol and -ethanone were prepared and selectively condensed with indole. 1-[[[2-(Diethylamino)-ethyl]amino]-3-pyridyl]ethanol and -ethanone bearing a ketal-protected acetyl moiety at the C-4 position have been obtained in high yields starting from the propylene glycol ketal of 1-(2-fluoro-4-pyridyl)ethanone. These reagents could not be condensed with indole either due to side reactions between the C-3 and C-4 functions or to steric hindrance. 1-(2-Substituted-4-bromo-3-pyridyl)ethanols were synthesized via a metalation/halogen-dance strategy starting from 2-fluoropyridine. 1-(2,4-Dihalo-3-pyridyl)-1-chloroethane could be prepared and condensed with 1-indolylmagnesium iodide, which allowed the construction of the expected 3-[1-(3-pyridyl)ethyl]indole skeleton. Functionalization of the pyridine C-4 bromo position was achieved by a vinylstannane cross-coupling reaction using a palladium(0) catalyst. Acidic treatment of the resulting 4-(1-ethoxyethenyl)pyridine led to 1-fluoroellipticine. The whole sequence requires six steps from indole and 2-fluoropyridine and allows an attractive overall yield.

  DOI：

  10.1021/jo00028a032
• 作为产物：
  描述：

  2-氟吡啶 在 正丁基锂 、 四甲基乙二胺 、 溴 、 lithium diisopropyl amide 作用下， 反应 7.0h， 生成 1-(2-氟-4-吡啶基)乙醇
  参考文献：
  名称：

  A new convergent route to 1-substituted ellipticines

  摘要：

  1-(2-Fluoro-4-pyridyl)ethanone was synthesized from 2-fluoropyridine and was ortho-lithiated after activation as the propylene glycol ketal. The resulting 3-lithio derivative was trapped by various electrophiles but reacted in low yield with N-protected 3-indolecarbaldehyde. Model compounds 1-[[[2-(diethylamino)ethyl]amino]-3-pyridyl]ethanol and -ethanone were prepared and selectively condensed with indole. 1-[[[2-(Diethylamino)-ethyl]amino]-3-pyridyl]ethanol and -ethanone bearing a ketal-protected acetyl moiety at the C-4 position have been obtained in high yields starting from the propylene glycol ketal of 1-(2-fluoro-4-pyridyl)ethanone. These reagents could not be condensed with indole either due to side reactions between the C-3 and C-4 functions or to steric hindrance. 1-(2-Substituted-4-bromo-3-pyridyl)ethanols were synthesized via a metalation/halogen-dance strategy starting from 2-fluoropyridine. 1-(2,4-Dihalo-3-pyridyl)-1-chloroethane could be prepared and condensed with 1-indolylmagnesium iodide, which allowed the construction of the expected 3-[1-(3-pyridyl)ethyl]indole skeleton. Functionalization of the pyridine C-4 bromo position was achieved by a vinylstannane cross-coupling reaction using a palladium(0) catalyst. Acidic treatment of the resulting 4-(1-ethoxyethenyl)pyridine led to 1-fluoroellipticine. The whole sequence requires six steps from indole and 2-fluoropyridine and allows an attractive overall yield.

  DOI：

  10.1021/jo00028a032

文献信息

• A new convergent route to 1-substituted ellipticines
  作者：F. Marsais、P. Pineau、F. Nivolliers、M. Mallet、A. Turck、A. Godard、G. Queguiner

  DOI：10.1021/jo00028a032

  日期：1992.1

  1-(2-Fluoro-4-pyridyl)ethanone was synthesized from 2-fluoropyridine and was ortho-lithiated after activation as the propylene glycol ketal. The resulting 3-lithio derivative was trapped by various electrophiles but reacted in low yield with N-protected 3-indolecarbaldehyde. Model compounds 1-[[[2-(diethylamino)ethyl]amino]-3-pyridyl]ethanol and -ethanone were prepared and selectively condensed with indole. 1-[[[2-(Diethylamino)-ethyl]amino]-3-pyridyl]ethanol and -ethanone bearing a ketal-protected acetyl moiety at the C-4 position have been obtained in high yields starting from the propylene glycol ketal of 1-(2-fluoro-4-pyridyl)ethanone. These reagents could not be condensed with indole either due to side reactions between the C-3 and C-4 functions or to steric hindrance. 1-(2-Substituted-4-bromo-3-pyridyl)ethanols were synthesized via a metalation/halogen-dance strategy starting from 2-fluoropyridine. 1-(2,4-Dihalo-3-pyridyl)-1-chloroethane could be prepared and condensed with 1-indolylmagnesium iodide, which allowed the construction of the expected 3-[1-(3-pyridyl)ethyl]indole skeleton. Functionalization of the pyridine C-4 bromo position was achieved by a vinylstannane cross-coupling reaction using a palladium(0) catalyst. Acidic treatment of the resulting 4-(1-ethoxyethenyl)pyridine led to 1-fluoroellipticine. The whole sequence requires six steps from indole and 2-fluoropyridine and allows an attractive overall yield.