1-Triisopropylsilanyl-8-trimethylsilanyl-octa-1,3,5,7-tetrayne | 920282-98-0

• 分子结构分类: 有机化合物 - 有机金属化合物 - 有机类金属化合物
• 英文名称: 1-Triisopropylsilanyl-8-trimethylsilanyl-octa-1,3,5,7-tetrayne
• 英文别名: 1-(Triisopropylsilyl)-8-(trimethylsilyl)octa-1,3,5,7-tetrayne；trimethyl-[8-tri(propan-2-yl)silylocta-1,3,5,7-tetraynyl]silane
• CAS: 920282-98-0
• 化学式: C₂₀H₃₀Si₂
• 分子量: 326.629
• InChiKey: TUYOOCDZEXWWDZ-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  5.1
• 重原子数：
  22
• 可旋转键数：
  8
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.6
• 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：

  1-Triisopropylsilanyl-8-trimethylsilanyl-octa-1,3,5,7-tetrayne 在 水 、 potassium carbonate 、 copper(II) sulfate 、 维生素 C 作用下， 以 四氢呋喃 、 甲醇 、 N,N-二甲基甲酰胺 为溶剂， 反应 5.0h， 生成 1-Benzyl-4-(6-triisopropylsilanyl-hexa-1,3,5-triynyl)-1H-[1,2,3]triazole
  参考文献：
  名称：

  Regioselective Trapping of Terminal Di-, Tri-, and Tetraynes with Benzyl Azide

  摘要：

  The reaction of benzyl azide with terminal di-, tri-, and tetraynes appended with a range of functional groups has been explored. Standard reaction conditions for BnN3 catalyzed by CuSO(4)(.)5H(2)O gave alkynyl, butadiynyl, and hexatriynyl triazoles in moderate to good yields. The reaction proceeds regioselectively as determined by the X-ray crystallographic analysis of three derivatives (1c, 1d, and 3c), and no evidence of multiple azide addition to the polyyne framework is observed.

  DOI：

  10.1021/ol062522a

文献信息

• Synthesis of polyynes to model the sp-carbon allotrope carbyne
  作者：Wesley A. Chalifoux、Rik R. Tykwinski

  DOI：10.1038/nchem.828

  日期：2010.11

  Carbyne is an allotrope of carbon composed of sp-hybridized carbon atoms. Although its formation in the laboratory is suggested, no well-defined sample is described. Interest in carbyne and its potential properties remains intense because of, at least in part, technological breakthroughs offered by other carbon allotropes, such as fullerenes, carbon nanotubes and graphene. Here, we describe the synthesis of a series of conjugated polyynes as models for carbyne. The longest of the series consists of 44 contiguous acetylenic carbons, and it maintains a framework clearly composed of alternating single and triple bonds. Spectroscopic analyses for these polyynes reveal a distinct trend towards a finite gap between the highest occupied molecular orbital and the lowest unoccupied molecular orbital for carbyne, which is estimated to be ∼485 nm (∼2.56 eV). Even the longest members of this series of polyynes are not particularly sensitive to light, moisture or oxygen, and they can be handled and characterized under normal laboratory conditions. The structure of the carbon allotrope ‘carbyne’ is based on a framework of sp-hybridized carbon. To model its properties, a series of conjugated polyynes — the longest of which contains 44 contiguous acetylenic carbons — have been synthesized and their spectroscopic properties investigated.

  碳炔是由sp杂化碳原子组成的碳同素异形体。虽然有人提出在实验室中可以合成碳炔，但尚未有明确的样品描述。人们对碳炔及其潜在特性的兴趣仍然浓厚，至少部分原因是其他碳同素异形体（如富勒烯、碳纳米管和石墨烯）带来了技术突破。在此，我们描述了一系列共轭聚炔的合成，作为碳炔的模型。该系列中最长的由44个连续的乙炔碳组成，其结构明显由交替的单键和三键组成。对这些聚炔的光谱分析表明，碳炔的最高被占分子轨道和最低未占分子轨道之间存在一个有限的间隙，估计为≦485 nm（≦2.56 eV）。即使该系列聚炔中最长的成员对光、湿气或氧气也不特别敏感，它们可以在正常的实验室条件下进行操作和表征。碳同素异形体“碳炔”的结构基于sp杂化碳的框架。为了模拟其特性，我们合成了一系列共轭聚炔（其中最长的一组包含44个连续的乙炔碳），并研究了它们的光谱特性。
• Reactions of Terminal Polyynes with Benzyl Azide
  作者：Thanh Luu、Boris J. Medos、Erin R. Graham、Danielle M. Vallee、Robert McDonald、Michael J. Ferguson、Rik R. Tykwinski

  DOI：10.1021/jo101870y

  日期：2010.12.17

  Terminal di-, tri-, tetra-, and pentaynes substituted with a variety of functional groups react with benzyl azide in the presence of CuSO4 center dot 5H(2)O and ascorbic acid to give derivatives of 4-ethynyl-, 4-butadiynyl-, 4-hexatriynyl-, and 4-octatetraynyl-,2,3-triazoles in moderate to good yields. These reactions appear to proceed regioselectively, and functionalization occurs exclusively at the terminal alkyne moiety. As well, no evidence of multiple azide additions to the polyyne framework is observed. X-ray crystallographic analysis of nine derivatives is used to document the regioselectivity of the reaction as well as outline structural characteristics of the 1,2,3-triazole products.
• Regioselective Trapping of Terminal Di-, Tri-, and Tetraynes with Benzyl Azide
  作者：Thanh Luu、Robert McDonald、Rik R. Tykwinski

  DOI：10.1021/ol062522a

  日期：2006.12.1

  The reaction of benzyl azide with terminal di-, tri-, and tetraynes appended with a range of functional groups has been explored. Standard reaction conditions for BnN3 catalyzed by CuSO(4)(.)5H(2)O gave alkynyl, butadiynyl, and hexatriynyl triazoles in moderate to good yields. The reaction proceeds regioselectively as determined by the X-ray crystallographic analysis of three derivatives (1c, 1d, and 3c), and no evidence of multiple azide addition to the polyyne framework is observed.