C-(2-fluorophenyl)-N-methylnitrone | 54420-38-1

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: C-(2-fluorophenyl)-N-methylnitrone
• 英文别名: (Z)-1-(2-fluorophenyl)-N-methylmethanimine oxide；N-Methyl-o-fluor-phenylaldonitron；N-methyl,α-(2-fluoro)phenyl nitrone；1-(2-fluorophenyl)-N-methylmethanimine oxide
• CAS: 54420-38-1
• 化学式: C₈H₈FNO
• 分子量: 153.156
• InChiKey: DMKJTAVTMHQJBW-POHAHGRESA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.1
• 重原子数：
  11
• 可旋转键数：
  1
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.12
• 拓扑面积：
  28.8
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  C-(2-fluorophenyl)-N-methylnitrone 在 1,8-二氮杂双环[5.4.0]十一碳-7-烯 作用下， 以 四氢呋喃 、 甲苯 为溶剂， 反应 9.0h， 生成 3-(2-fluorophenyl)-2-methyl-isoxazolidine-4-sulfonic acid 4-methylbenzylamide
  参考文献：
  名称：

  Synthesis of Functionalized Sulfonamides via 1,3-Dipolar Cycloaddition of Pentafluorophenyl Vinylsulfonate

  摘要：

  [GRAPHICS]An efficient intermolecular 1,3-dipolar cycloaddition of a variety of nitrones to pentafluorophenyl (PFP) vinylsulfonate is described. The transformation produces stable "reversed" cycloadducts of unprecedented stereo- and regioselectivity. Subsequent amine displacement of the PFP moiety furnished functionalized sulfonamide products in good yields.

  DOI：

  10.1021/ol0347388
• 作为产物：
  描述：

  N-甲基羟胺 、 2-氟苯甲醛 在 盐酸 、 碳酸氢钠 作用下， 以 二氯甲烷 为溶剂， 反应 2.0h， 生成 C-(2-fluorophenyl)-N-methylnitrone
  参考文献：
  名称：

  Synthesis of Functionalized Sulfonamides via 1,3-Dipolar Cycloaddition of Pentafluorophenyl Vinylsulfonate

  摘要：

  [GRAPHICS]An efficient intermolecular 1,3-dipolar cycloaddition of a variety of nitrones to pentafluorophenyl (PFP) vinylsulfonate is described. The transformation produces stable "reversed" cycloadducts of unprecedented stereo- and regioselectivity. Subsequent amine displacement of the PFP moiety furnished functionalized sulfonamide products in good yields.

  DOI：

  10.1021/ol0347388

文献信息

• Electronic effects in 1,3-dipolar cycloaddition reactions of N-alkyl and N-benzyl nitrones with dipolarophiles
  作者：Andrei Bădoiu、E. Peter Kündig

  DOI：10.1039/c1ob06144e

  日期：——

  1,3-Dipolar cycloadditions afforded fast access to isoxazolidines bearing N-alkyl or N-benzyl substituents. The electronic properties of the substituents in the nitrones define the activity of the dipoles and modulate diastereoselectivity in the non-catalyzed reactions. Using a chiral one-point binding ruthenium Lewis acid catalyst, products were obtained in good yields and with excellent regio-, diastereo-

  1，3-偶极环加成可快速接近带有N-烷基或N-苄基取代基的异恶唑烷。硝酮中取代基的电子性质定义了偶极子的活性，并调节了非催化反应中的非对映选择性。使用手性单点结合钌路易斯酸催化剂，可以以良好的收率和优异的区域，非对映和对映选择性获得产物。
• Rh2(esp)2-Catalyzed Redox/Cycloaddition Cascade of Diazoaceto­acetate Enones with N-Methyl Nitrones: Diastereoselective Synthesis of β-Lactams with Two Adjacent Chiral Centers
  作者：Xichen Xu、Yingjun Zhao、Rujie Xu、Zhengqing Xu

  DOI：10.1055/s-0040-1719883

  日期：2022.5

  employing Rh2(esp)2 as the catalyst, a reaction cascade operates by reducing an N-methyl nitrone to the corresponding N-methyl imine in the presence of a first molecule of the diazoacetoacetate enone. A second molecule of the diazoacetoacetate enone sensing a change in the reaction medium undergoes a Wolff rearrangement to afford a vinyl ketene. This vinyl ketene then reacts with the in situ generated

  开发了一种 Rh2(esp)2 催化的高度功能化 β-内酰胺的非对映选择性合成。通过使用Rh2(esp)2作为催化剂，反应级联通过在重氮乙酰乙酸烯酮的第一分子存在下将N-甲基硝酮还原为相应的N-甲基亚胺而进行。感测反应介质变化的重氮乙酰乙酸烯酮的第二分子经历沃尔夫重排以提供乙烯基乙烯酮。然后该乙烯基乙烯酮与原位生成的 N-甲基亚胺反应，非对映选择性地提供具有两个连续立体中心的 β-内酰胺。还报道了将该方法扩展到由 Rh2(esp)2 催化的 PMB 保护的亚胺和重氮乙酰乙酸烯酮的 [2+2]-环加成。
• Photoredox-catalyzed cross-coupling of N-indolylacetic acids with nitrones: Access to indole-N-ethylamines
  作者：Na He、Yingying Yang、Zhi Qiao、Fan Zhu、Jun Lin、Xizhong Song、Yi Jin

  DOI：10.1016/j.tetlet.2023.154712

  日期：2023.9
• Synthesis of Functionalized Sulfonamides via 1,3-Dipolar Cycloaddition of Pentafluorophenyl Vinylsulfonate
  作者：Stephen Caddick、Hannah D. Bush

  DOI：10.1021/ol0347388

  日期：2003.7.1

  [GRAPHICS]An efficient intermolecular 1,3-dipolar cycloaddition of a variety of nitrones to pentafluorophenyl (PFP) vinylsulfonate is described. The transformation produces stable "reversed" cycloadducts of unprecedented stereo- and regioselectivity. Subsequent amine displacement of the PFP moiety furnished functionalized sulfonamide products in good yields.