bis(trimethylsilyl)difluoromethane | 86847-53-2

• 分子结构分类: 有机化合物 - 有机盐 - 有机金属盐
• 英文名称: bis(trimethylsilyl)difluoromethane
• 英文别名: [difluoro(trimethylsilyl)methyl]-trimethylsilane
• CAS: 86847-53-2
• 化学式: C₇H₁₈F₂Si₂
• 分子量: 196.388
• InChiKey: ZIOUUEAZGHOVAT-UHFFFAOYSA-N

物化性质

• 沸点：
  137.3±40.0 °C(Predicted)
• 密度：
  0.867±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  3.38
• 重原子数：
  11
• 可旋转键数：
  2
• 环数：
  0.0
• sp3杂化的碳原子比例：
  1.0
• 拓扑面积：
  0
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  bis(trimethylsilyl)difluoromethane 在 iron(II) chloride 、 锌 作用下， 以 四氢呋喃 为溶剂， 以71 %的产率得到1,2-bis(trimethylsilyl)-1,1,2,2-tetrafluoroethane
  参考文献：
  名称：

  Controllable Fluorocarbon Chain Elongation: TMSCF₂Br-Enabled Trifluorovinylation and Pentafluorocyclopropylation of Aldehydes

  摘要：

  DOI：

  10.1021/jacs.3c12919
• 作为产物：
  描述：

  (氯二氟甲基)三甲基硅烷 在 六甲基磷酰三胺 、 三甲基氯硅烷 、 四丁基氟化铵 、 四丁基溴化铵 作用下， 生成 六甲基二硅氧烷 、 三甲基(1,2,2-三氟乙烯基)硅烷 、 bis(trimethylsilyl)difluoromethane
  参考文献：
  名称：

  Preparation of and Fluoroalkylation with (Chlorodifluoromethyl)trimethylsilane, Difluorobis(trimethylsilyl)methane, and 1,1,2,2-Tetrafluoro-1,2-bis(trimethylsilyl)ethane

  摘要：

  CF2BrCl reacts with aluminum/N-methylpyrrolidinone in the presence of chlorotrimethylsilane to give Me(3)SiCF(2)Cl in high yield. Similarly, CF2Br2 gives Me(3)SiCF(2)Br with bromotrimethylsilane. Chlorodifluoromethylation of aldehydes using Me(3)SiCF(2)Cl and a catalytic amount of TBAF in polar solvents occurs at room temperature, providing difluoromethylated alcohols in two steps. Electroreduction of Me(3)SiCF(2)Cl in the presence of chlorotrimethylsilane gives Me(3)SiCF(2)SiMe(3) (anion-derived product) and Me(3)SiCF(2)CF(2)SiMe(3) (radical-derived product). Using THF/HMPA strongly favors the former, whereas THF/TDA-1 (tris(3,6-dioxaheptyl)amine) the latter. Me(3)SiCF(2)-SiMe(3) difluoromethylates aldehydes acting as a difluoromethylene dianion (''CF22-'' equivalent), whereas Me(3)SiCF(2)-CF(2)SiMe(3) acts at room temperature as an in situ source for the perfluorovinyl anion (due to beta-elimination of fluorotrimethylsilane). However, at low temperature the elimination pathway is suppressed and tetrafluoroethylene dianion (''-CF2CF2-'' equivalent) behavior is observed, The structure of Me(3)SiCF(2)CF(2)SiMe(3) was analyzed by X-ray diffraction. All of the studied fluoroalkylating reagents are moisture- and air-stable and can be readily obtained from a single convenient precursor (CF2BrCl).

  DOI：

  10.1021/ja962990n

文献信息

• Preparation of Tri- and Difluoromethylsilanes via an Unusual Magnesium Metal-Mediated Reductive Tri- and Difluoromethylation of Chlorosilanes Using Tri- and Difluoromethyl Sulfides, Sulfoxides, and Sulfones
  作者：G. K. Surya Prakash、Jinbo Hu、George A. Olah

  DOI：10.1021/jo030110z

  日期：2003.5.1

  A new and efficient method for the preparation of tri- and difluoromethylsilanes using magnesium metal-mediated reductive tri- and difluoromethylation of chlorosilanes is reported using tri- and difluoromethyl sulfides, sulfoxides, and sulfones. The byproduct of the process is diphenyl disulfide. Since phenyl trifluoromethyl sulfone, sulfoxide, and sulfide are readily prepared from trifluoromethane

  据报道，使用三和二氟甲基硫化物，亚砜和砜，使用镁金属介导的氯硅烷的三和二氟甲基化还原反应来制备三和二氟甲基硅烷的新的有效方法。该方法的副产物是二苯基二硫化物。由于可以很容易地从三氟甲烷（CF（3）H）和二苯基二硫化物制备苯基三氟甲基砜，亚砜和硫化物，因此该方法可以认为是二苯基二硫化物的催化方法，用于制备（三氟甲基）三甲基硅烷（TMS-CF（3 ））来自不消耗臭氧的三氟甲烷。
• Fritz, Gerhard; Bauer, Heinz, Angewandte Chemie, 1983, vol. 95, # 9, p. 740 - 741
  作者：Fritz, Gerhard、Bauer, Heinz

  DOI：——

  日期：——
• Preparation of and Fluoroalkylation with (Chlorodifluoromethyl)trimethylsilane, Difluorobis(trimethylsilyl)methane, and 1,1,2,2-Tetrafluoro-1,2-bis(trimethylsilyl)ethane
  作者：Andrei K. Yudin、G. K. Surya Prakash、Denis Deffieux、Michael Bradley、Robert Bau、George A. Olah

  DOI：10.1021/ja962990n

  日期：1997.2.1

  CF2BrCl reacts with aluminum/N-methylpyrrolidinone in the presence of chlorotrimethylsilane to give Me(3)SiCF(2)Cl in high yield. Similarly, CF2Br2 gives Me(3)SiCF(2)Br with bromotrimethylsilane. Chlorodifluoromethylation of aldehydes using Me(3)SiCF(2)Cl and a catalytic amount of TBAF in polar solvents occurs at room temperature, providing difluoromethylated alcohols in two steps. Electroreduction of Me(3)SiCF(2)Cl in the presence of chlorotrimethylsilane gives Me(3)SiCF(2)SiMe(3) (anion-derived product) and Me(3)SiCF(2)CF(2)SiMe(3) (radical-derived product). Using THF/HMPA strongly favors the former, whereas THF/TDA-1 (tris(3,6-dioxaheptyl)amine) the latter. Me(3)SiCF(2)-SiMe(3) difluoromethylates aldehydes acting as a difluoromethylene dianion (''CF22-'' equivalent), whereas Me(3)SiCF(2)-CF(2)SiMe(3) acts at room temperature as an in situ source for the perfluorovinyl anion (due to beta-elimination of fluorotrimethylsilane). However, at low temperature the elimination pathway is suppressed and tetrafluoroethylene dianion (''-CF2CF2-'' equivalent) behavior is observed, The structure of Me(3)SiCF(2)CF(2)SiMe(3) was analyzed by X-ray diffraction. All of the studied fluoroalkylating reagents are moisture- and air-stable and can be readily obtained from a single convenient precursor (CF2BrCl).
• Controllable Fluorocarbon Chain Elongation: TMSCF₂Br-Enabled Trifluorovinylation and Pentafluorocyclopropylation of Aldehydes
  作者：An Liu、Xianghong Zhang、Feng Zhao、Chuanfa Ni、Jinbo Hu

  DOI：10.1021/jacs.3c12919

  日期：2024.1.24