1,3,4,5-tetramethyl-2-diphenyl(seleno)phosphinomethylimidazolium tetrafluoroborate | 477205-48-4

• 英文名称: 1,3,4,5-tetramethyl-2-diphenyl(seleno)phosphinomethylimidazolium tetrafluoroborate
• CAS: 477205-48-4
• 化学式: BF₄*C₂₀H₂₄N₂PSe
• 分子量: 489.162
• InChiKey: IEVKKZFGGWFHKS-UHFFFAOYSA-N

反应信息

• 作为产物：
  描述：

  tetrafluoroboric acid 、 1,3,4,5-tetramethyl-2-diphenyl(seleno)phosphinomethylimidazoline 以 四氢呋喃 、 乙醚 为溶剂， 以80%的产率得到1,3,4,5-tetramethyl-2-diphenyl(seleno)phosphinomethylimidazolium tetrafluoroborate
  参考文献：
  名称：

  Der Einfluß von Phosphoryl-Substituenten auf die Eigenschaften P-substituierter 2-Methylimidazolium-Ionen und 2-Methylenimidazoline [1]Professor Joachim Strähle zum 65. Geburtstag gewidmet

  摘要：

  The imidazolines ImCHP(E)Ph-2 [6, E = S (a), Se (b)] are obtained from ImCHPPh(2) (4) and sulfur or selenium. HBF4 reaction yields the corresponding imidazolium salts [ImCH(2),. P(E)Ph-2][BF4] [5, E = S (a), Se (b)]. 1,3,4,5-Tetramethyl-2-methylenimidazoline (1, ImCH(2)) reacts with Ph2P(O)Cl to give the corresponding phosphane salt [ImCH(2)P(O)Ph-2]Cl (7) from which the vinyl compound ImCHP(O)Ph-2 (8) is formed through deprotonation. 8 reacts with excess HBF4 to give the phosphine oxide BF3 adduct [ImCH(2)P(O)Ph-2 . BF3][BF4] (9). The crystal structures of 5a, 5b, 6b, 7 . CH2Cl2 and 9 . H2O as well as preliminary data of 8 are reported and discussed on comparison with the phosphanes [ImCH(2)PPh(2)][BF4](3b) and ImCHPPh(2) (4). From structural data, pi-electron delocalisation is concluded for 6b and 8.

  DOI：

  10.1002/1521-3749(200206)628:5<1108::aid-zaac1108>3.0.co;2-c