(2r,4r)-1,1,3,3-tetra-tert-butyl-2,4-dichloro-2,4-diphenyl-1l5,3l5,2l4,4l4-diarsadiboretane | 148098-61-7

• 英文名称: (2r,4r)-1,1,3,3-tetra-tert-butyl-2,4-dichloro-2,4-diphenyl-1l5,3l5,2l4,4l4-diarsadiboretane
• CAS: 148098-61-7
• 化学式: C₂₈H₄₆As₂B₂Cl₂
• 分子量: 625.044
• InChiKey: SVXUYDABVWOOSZ-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  None
• 重原子数：
  None
• 可旋转键数：
  None
• 环数：
  None
• sp3杂化的碳原子比例：
  None
• 拓扑面积：
  None
• 氢给体数：
  None
• 氢受体数：
  None

反应信息

• 作为反应物：
  描述：

  (2r,4r)-1,1,3,3-tetra-tert-butyl-2,4-dichloro-2,4-diphenyl-1l5,3l5,2l4,4l4-diarsadiboretane 、 (di-tert-butylarsino)lithium 以 乙醚 、 正己烷 为溶剂， 以46%的产率得到Arsine, (phenylborylene)bis[bis(1,1-dimethylethyl)-
  参考文献：
  名称：

  Syntheses, structures, and spectroscopic studies of several new classes of compounds having boron-arsenic bonds

  摘要：

  Several new arsinoboranes, wherein boron and arsenic are three coordinate, have been prepared and characterized. They are analogous to B-N and B-P species in which p-p pi-bonding, involving the pnictide lone pair and the empty boron p-orbital, may occur. The main conclusion of these studies is that B-As pi-bonding, although inherently strong, is difficult to achieve because of the larger inversion barrier at arsenic. Nontheless, very electropositive or bulky substituents at arsenic reduce this barrier sufficiently to observe substantial B-As pi-interactions. The compounds studied include [PhB(Cl)As(t-Bu)2]2 (1), PhB{As(t-BU)212 (2), Cp*B(Cl)As(t-Bu)2 (3), (C20H30)BAs(t-Bu)2 (4), Mes2BAsPhLi(THF)3 (5), [Mes2BAsPh] [Li(TMEDA)2] (6), and Mes2BAs(Ph)SiMe3 (7) (Cp* = pentamethylcyclopentadienyl, TMEDA = N,N,N'N'-tetramethylenediamine, Mes = 2,4,6-Me3C6H2). The species 5 and 6 have been reported in a preliminary note. All compounds were characterized by X-ray crystallography and H-1 NMR and B-11 NMR spectroscopy. In addition, 5 and 7 were characterized by variable-temperature H-1 NMR studies.

  DOI：

  10.1021/ja00061a021
• 作为产物：
  描述：

  二氯苯酚溴酯 、 Di-tert-butyl-arsin 在 n-butyl lithium 作用下， 以 乙醚 、 正己烷 为溶剂， 以60%的产率得到(2r,4r)-1,1,3,3-tetra-tert-butyl-2,4-dichloro-2,4-diphenyl-1l5,3l5,2l4,4l4-diarsadiboretane
  参考文献：
  名称：

  Syntheses, structures, and spectroscopic studies of several new classes of compounds having boron-arsenic bonds

  摘要：

  Several new arsinoboranes, wherein boron and arsenic are three coordinate, have been prepared and characterized. They are analogous to B-N and B-P species in which p-p pi-bonding, involving the pnictide lone pair and the empty boron p-orbital, may occur. The main conclusion of these studies is that B-As pi-bonding, although inherently strong, is difficult to achieve because of the larger inversion barrier at arsenic. Nontheless, very electropositive or bulky substituents at arsenic reduce this barrier sufficiently to observe substantial B-As pi-interactions. The compounds studied include [PhB(Cl)As(t-Bu)2]2 (1), PhB{As(t-BU)212 (2), Cp*B(Cl)As(t-Bu)2 (3), (C20H30)BAs(t-Bu)2 (4), Mes2BAsPhLi(THF)3 (5), [Mes2BAsPh] [Li(TMEDA)2] (6), and Mes2BAs(Ph)SiMe3 (7) (Cp* = pentamethylcyclopentadienyl, TMEDA = N,N,N'N'-tetramethylenediamine, Mes = 2,4,6-Me3C6H2). The species 5 and 6 have been reported in a preliminary note. All compounds were characterized by X-ray crystallography and H-1 NMR and B-11 NMR spectroscopy. In addition, 5 and 7 were characterized by variable-temperature H-1 NMR studies.

  DOI：

  10.1021/ja00061a021