2,2,3,3-Tetrafluoro-1,4-dimorpholin-4-ylbutane-1,4-dione | 570419-84-0

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 恶嗪烷类
• 英文名称: 2,2,3,3-Tetrafluoro-1,4-dimorpholin-4-ylbutane-1,4-dione
• CAS: 570419-84-0
• 化学式: C₁₂H₁₆F₄N₂O₄
• 分子量: 328.264
• InChiKey: VSKIACBCZPHDMF-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -0.2
• 重原子数：
  22
• 可旋转键数：
  3
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.83
• 拓扑面积：
  59.1
• 氢给体数：
  0
• 氢受体数：
  8

反应信息

• 作为产物：
  描述：

  2,2-difluoro-2-iodo-1-morpholinoethanone 在 铜 作用下， 以 二甲基亚砜 为溶剂， 反应 8.0h， 以47%的产率得到2,2,3,3-Tetrafluoro-1,4-dimorpholin-4-ylbutane-1,4-dione
  参考文献：
  名称：

  Copper-Mediated Fluoroalkylation Reactions with Iododifluoroacetamides: Controlling the Selectivity among Cross-Coupling, Intramolecular Cyclization, and Homocoupling Reactions

  摘要：

  Cu-mediated fluoroalkylation reactions with iododifluoroacetamides I have been systematically investigated. It was found that three types of reactions may coexist in Cu-mediated reactions between iododifluoroacetamides and aryl/alkenyl iodides: cross-coupling, intramolecular cyclization, and homocoupling reactions. The selectivity among these three types of reactions could be controlled by tuning the substituents on the nitrogen atom of iododifluoroacetamides, and/or by removing the cross-coupling reaction partner (aryl/alkenyl halides). The general rule is as follows: (a) in the presence of proper aryl/alkenyl iodides, the cross-coupling products 2 (or 6) are generally formed as the major products; (b) in the absence of aryl/alkenyl iodides, and when R-1 = alkyl and R-2 = aryl groups, or when R-1 = R-2 = aryl groups, the intramolecular cyclization products 3 can be formed predominantly; and (c) in the absence of aryl/alkenyl iodides, and when R-1 = R-2 = alkyl groups, or when R-1 = H and R-2 = alkyl, aryl groups, the homocoupling products 4 can be formed dominantly. Our experimental results also indicate that in many cases when cross-coupling, homocoupling, and intramolecular cyclization reactions coexist in the Cu-mediated reaction system, the reactivity decreases in the following order: cross-coupling > intramolecular cyclization > homocoupling.

  DOI：

  10.1021/jo1005262

文献信息

• Copper-Mediated Fluoroalkylation Reactions with Iododifluoroacetamides: Controlling the Selectivity among Cross-Coupling, Intramolecular Cyclization, and Homocoupling Reactions
  作者：Jieming Zhu、Wei Zhang、Laijun Zhang、Jun Liu、Ji Zheng、Jinbo Hu

  DOI：10.1021/jo1005262

  日期：2010.8.20

  Cu-mediated fluoroalkylation reactions with iododifluoroacetamides I have been systematically investigated. It was found that three types of reactions may coexist in Cu-mediated reactions between iododifluoroacetamides and aryl/alkenyl iodides: cross-coupling, intramolecular cyclization, and homocoupling reactions. The selectivity among these three types of reactions could be controlled by tuning the substituents on the nitrogen atom of iododifluoroacetamides, and/or by removing the cross-coupling reaction partner (aryl/alkenyl halides). The general rule is as follows: (a) in the presence of proper aryl/alkenyl iodides, the cross-coupling products 2 (or 6) are generally formed as the major products; (b) in the absence of aryl/alkenyl iodides, and when R-1 = alkyl and R-2 = aryl groups, or when R-1 = R-2 = aryl groups, the intramolecular cyclization products 3 can be formed predominantly; and (c) in the absence of aryl/alkenyl iodides, and when R-1 = R-2 = alkyl groups, or when R-1 = H and R-2 = alkyl, aryl groups, the homocoupling products 4 can be formed dominantly. Our experimental results also indicate that in many cases when cross-coupling, homocoupling, and intramolecular cyclization reactions coexist in the Cu-mediated reaction system, the reactivity decreases in the following order: cross-coupling > intramolecular cyclization > homocoupling.