1-(difluoromethyl)-6-oxo-1,6-dihydropyridine-3-carbonitrile

• 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
• 英文名称: 1-(difluoromethyl)-6-oxo-1,6-dihydropyridine-3-carbonitrile
• 英文别名: 1-(Difluoromethyl)-6-oxopyridine-3-carbonitrile；1-(difluoromethyl)-6-oxopyridine-3-carbonitrile
• 化学式: C₇H₄F₂N₂O
• 分子量: 170.118
• InChiKey: RYHWDVBYXBRYQV-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.8
• 重原子数：
  12
• 可旋转键数：
  1
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.14
• 拓扑面积：
  44.1
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为产物：
  描述：

  N-(5-cyanopyridin-2-yl)acetamide 在 potassium hydrogensulfate 、 18-冠醚-6 、 sodium chlorodifluoroacetate 作用下， 以 乙腈 为溶剂， 反应 11.0h， 生成 1-(difluoromethyl)-6-oxo-1,6-dihydropyridine-3-carbonitrile
  参考文献：
  名称：

  Facile One-Pot Synthesis of N-Difluoromethyl-2-pyridone Derivatives

  摘要：

  A novel one-pot synthesis of N-difluoromethyl-2-pyridones is described. N-(Pyridin-2-yl) acetamide derivatives were excellent precursors for the preparation of N- difluoromethyl-2-pyridone derivatives. Difluoromethylation of 2-acetaminopyridine derivatives was achieved with sodium chlorodifluoroacetate as a difluorocarbene source in the presence of a catalytic amount of 18-crown-6. Subsequent in situ hydrolysis of resultant 1,2-dihydro-2-acetimino-1-difluoromethylpyridines proceeded under mild acidic conditions to afford the corresponding N-difluoromethyl-2-pyridones in moderate to good yields.

  DOI：

  10.1021/ol061481f

文献信息

• Direct Synthesis of <i>N</i>-Difluoromethyl-2-pyridones from Pyridines
  作者：Sen Zhou、Xiaoya Hou、Kai Yang、Minjie Guo、Wentao Zhao、Xiangyang Tang、Guangwei Wang

  DOI：10.1021/acs.joc.1c00228

  日期：2021.5.7

  A novel method for the synthesis of N-difluoromethyl-2-pyridones was described. This protocol enables the synthesis of N-difluoromethyl-2-pyridones from readily available pyridines using mild reaction conditions that are compatible with a wide range of functional groups. The preliminary mechanistic study revealed that N-difluoromethylpyridinium salts were the key intermediates to complete this conversion

  描述了一种合成N-二氟甲基-2-吡啶酮的新方法。该方案能够使用温和的反应条件，从易得的吡啶中合成N-二氟甲基-2-吡啶酮，该反应条件与多种官能团相容。初步的机理研究表明，N-二氟甲基吡啶鎓盐是完成该转化的关键中间体。