1,2,3,4,5-pentamethyl-2,3-dihydro-1,3-diborole | 118298-05-8

• 分子结构分类: 有机化合物
• 英文名称: 1,2,3,4,5-pentamethyl-2,3-dihydro-1,3-diborole
• 英文别名: pentamethyl-2,3-dihydro-1,3-diborole；1,2,3,4,5-pentamethyl-2H-1,3-diborole
• CAS: 118298-05-8
• 化学式: C₈H₁₆B₂
• 分子量: 133.837
• InChiKey: ZQNJYCLYRJCWQI-UHFFFAOYSA-N

物化性质

• 沸点：
  40 °C(Press: 20 Torr)
• 密度：
  0.74±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.59
• 重原子数：
  10
• 可旋转键数：
  0
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.75
• 拓扑面积：
  0
• 氢给体数：
  0
• 氢受体数：
  0

反应信息

• 作为反应物：
  描述：

  η5-cyclopentadienylbis(ethene)cobalt 、 1,2,3,4,5-pentamethyl-2,3-dihydro-1,3-diborole 以 Petroleum ether 为溶剂， 以80%的产率得到(η5-cyclopentadienyl)cobalt(η5-1,2,3,4,5-pentamethyl-2,3-dihydro-1,3-diborole)
  参考文献：
  名称：

  Knoerzer, G.; Siebert, W., Zeitschrift fur Naturforschung, B: Chemical Sciences

  摘要：

  DOI：
• 作为产物：
  描述：

  1,2,3,4-tetramethyl-1,4-diboracyclohexene-2 以 甲苯 为溶剂， 以90%的产率得到1,2,3,4,5-pentamethyl-2,3-dihydro-1,3-diborole
  参考文献：
  名称：

  Uhm, J.-K.; Roemich, H.; Wadepohl, H., Zeitschrift fur Naturforschung, B: Chemical Sciences, 1988, vol. 43, # 3, p. 306 - 308

  摘要：

  DOI：

文献信息

• Paramagnetic (1,3‐Diborolyl)ruthenium Triple‐Decker Complexes and Transformation into Diamagnetic Complexes Having Bridging 1,3‐Diborafulvene Ligands
  作者：Elena V. Mutseneck、Hubert Wadepohl、Markus Enders、Alexander R. Kudinov、Walter Siebert

  DOI：10.1002/ejic.200901232

  日期：2010.7

  paramagnetic triple-decker complexes [(Cp*Ru) 2 μ-(CMe) 3 (BCl)(BMe))] (3b) and [(Cp*Ru) 2 μ-(CMe) 3 (BCl) 2 }] (3c) are formed by refluxing a mixture of [Cp*RuCl] 4 and pentamethyl-2,3-dihydro-1,3-diborole in thf. In CH 2 Cl 2 under air complex 3b slowly looses a hydrogen atom with formation of the diamagnetic triple-decker [(Cp*Ru) 2 μ-η 5 :η 6 -(CMe) 3 -(BCl)(BCH 2 )}] (4b) with the unsymmetrical

  顺磁性三层复合物 [(Cp*Ru) 2 μ-(CMe) 3 (BCl)(BMe))] (3b) 和 [(Cp*Ru) 2 μ-(CMe) 3 (BCl) 2 }] (3c)是通过在thf中回流[Cp*RuCl] 4 和五甲基-2,3-二氢-1,3-二硼的混合物而形成的。在空气中的 CH 2 Cl 2 中，配合物 3b 缓慢释放一个氢原子，形成抗磁性三层 [(Cp*Ru) 2 μ-η 5 :η 6 -(CMe) 3 -(BCl)(BCH 2 ) }] (4b) 具有桥接位置的不对称二氢二硼富烯衍生物。类似的复合物 [(Cp*Ru) 2 μ.η 5 :η 6 -(CMe) 3 (BMe)-(BCH 2 )}] (4a) 是通过 HCl 与三层 [(Cp *Ru) 2 -μ-(CMe) 3 (BMe) 2 }] (3a)。根据计算，配合物 4a 和 4b 具有几乎无畸变的三层排列，B=CH
• Mueller, Thomas; Kaschke, Michael; Strauch, Melanie, European Journal of Inorganic Chemistry, 1999, # 10, p. 1685 - 1692
  作者：Mueller, Thomas、Kaschke, Michael、Strauch, Melanie、Ginsberg, Achim、Pritzkow, Hans、Siebert, Walter

  DOI：——

  日期：——
• Siebert, Walter, Pure and Applied Chemistry, 1987, vol. 59, p. 947 - 954
  作者：Siebert, Walter

  DOI：——

  日期：——
• Syntheses and ligand properties of 1,3-dit-butyl-2,3-dihydro-1,3-diboroles. Rhodium-(η5-2,3-dihydro-1,3-diborole) and rhodium-(η5-2,3-dihydro-1,3-diborolyl) complexes
  作者：Achim Ginsberg、Hans Pritzkow、Walter Siebert

  DOI：10.1016/s0022-328x(00)00516-7

  日期：2001.1

  Of the new 1,3-dit-butyl-2,3-dihydro-1,3-diboroles (la,b), the pentaalkyl derivative Ib reacts with [(C2H4),RhCl](2) to give the Cl-bridged dimer 2b. The single crystal structure analysis of 2b reveals that the hydrogen atoms H2 and H22 in the two-positions are located on the opposite side of the dihydrodiborole rings than the rhodium atoms, with formation of 3c/2e C-H-->B bonds. The chlorine bridges in 2b are cleaved with MeLi in toluene to give the arenediborolylrhodium sandwich 3b. The tetraalkyl-1,3-diborole (la) reads with MeLi or KH and then [(C2H4)(2)RhCl](2) in toluene to give the sandwich 3a. Treatment of 2b with MeLi in the presence of the 1,3-diborole (Ib) provides the 16 VE 1,3-diborolyl-1,3-diborolrhodium complex 4b. With CpNa 2b forms the 1,3-diborole sandwich 6b, which has a 3c/2e C-H-->B bond, whereas with Cp*Li the hydride complex 7b with a Rh-H bond is obtained. (C) 2001 Elsevier science B.V. All rights reserved.
• KNORZER, G.;SIEBERT, W., Z. NATURFORSCH. B, 45,(1990) N, C. 15-18
  作者：KNORZER, G.、SIEBERT, W.

  DOI：——

  日期：——