bis(trimethylplumbyl)ethyne | 17858-20-7

• 分子结构分类: 有机化合物 - 有机金属化合物 - 有机过渡后金属化合物
• 英文名称: bis(trimethylplumbyl)ethyne
• 英文别名: (Ethyne-1,2-diyl)bis(trimethylplumbane)；trimethyl(2-trimethylplumbylethynyl)plumbane
• CAS: 17858-20-7
• 化学式: C₈H₁₈Pb₂
• 分子量: 528.631
• InChiKey: HZBMLSZIKPATET-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.74
• 重原子数：
  10
• 可旋转键数：
  2
• 环数：
  0.0
• 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：

  bis(trimethylplumbyl)ethyne 、 2-Trimethylstannyl-3-diethylboryl-penten-2 以 甲苯 为溶剂， 生成 1,1-bis(trimethylplumbyl)-3-diethylboryl(trimethylstannyl)(methyl)methyl-1,2-pentadiene
  参考文献：
  名称：

  Wrackmeyer, Bernd; Horchler von Locquenghien, Klaus, Zeitschrift fur Naturforschung, B: Chemical Sciences

  摘要：

  DOI：

文献信息

• Stepwise synthesis of organometallic-substituted stannoles via stabilized triorganotin cations
  作者：Bernd Wrackmeyer、Klaus Horchler von Locquenghien、Sabine Kundler

  DOI：10.1016/0022-328x(95)05550-9

  日期：1995.11

  A new triorganotin chloride, (E)-2-Chloro(dimethyl)stannyl-3-diethylboryl-N, N-dimethyl-2-pentenylamine (4), was prepared via 1,1-ethyloboration. Compound 4 reacts with alkynyltin compounds of the type R(1)-C=C-SnMe(3) [R(1) = Me (a) (t)Bu (b), SiMe(3) (c), SnMe(3) (d), CH(2)OMe (f)] and Me(3)Pb-C=C-PbMe(3) (e) via elimination of Me(3)SnCl or Me(3)PbCl (e) to give zwitterionic intermediates 5a,c-f in which a cationic triorganotin fragment is stabilized by side-on coordination to the C=C bond of an alkynylborate group and by a coordinative N-Sn bond. The intermediates 5c-e are the first examples of(eta(2)-alkyne)tin compounds where an organometallic substituent is linked to the bridging alkynyl group. These intermediates rearrange at room temperature to give the pure stannole derivatives 6c-f. The synthesis of 6b requires heating under reflux for several hours; no intermediate was detected. The analogous reaction of (E)-2-chloro(dimethyl)stannyl-3-diethylboryl-2-pentene (7) with R(1)-C=C-SnMe(3) (R(1) = SnMe(3), SnMe(3)) or Me(3)Pb-C=C-PbMe(3) afforded the analogous stannoles 8c-e, but the intermediates corresponding to 5 were too short-lived for NMR spectroscopic detection. All intermediates and the final products were characterized by extensive one- and two-dimensional multinuclear magnetic resonance studies (H-1, B-11, C-13, N-15, Si-29 Sn-119 and (207)pb NMR), including the determination of a negative sign for the coupling constant (1)J((PbC)-Pb-207-C-13=) in the intermediate 5e.
• Wrackmeyer, Bernd; Horchler von Locquenghien, Klaus, Zeitschrift fur Naturforschung, B: Chemical Sciences
  作者：Wrackmeyer, Bernd、Horchler von Locquenghien, Klaus

  DOI：——

  日期：——