tert-butyl(hexa-3,5,-diyn-1-yloxy)dimethylsilane | 1411943-20-8

• 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: tert-butyl(hexa-3,5,-diyn-1-yloxy)dimethylsilane
• 英文别名: tert-butyl(hexa-3,5-diynyloxy)dimethylsilane；Tert-butyl-hexa-3,5-diynoxy-dimethylsilane
• CAS: 1411943-20-8
• 化学式: C₁₂H₂₀OSi
• 分子量: 208.376
• InChiKey: KJUQSNFYTYGMGJ-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.03
• 重原子数：
  14
• 可旋转键数：
  5
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.67
• 拓扑面积：
  9.2
• 氢给体数：
  0
• 氢受体数：
  1

反应信息

• 作为反应物：
  描述：

  tert-butyl(hexa-3,5,-diyn-1-yloxy)dimethylsilane 在 manganese(IV) oxide 、 bis-triphenylphosphine-palladium(II) chloride 、 正丁基锂 、 三乙胺 作用下， 以 四氢呋喃 、 正己烷 、 二氯甲烷 为溶剂， 反应 23.75h， 生成 11-(tert-butyldimethylsilyl)-4-(trimethylsilyl)-3,6,7,8,9,10-hexahydrocyclohepta[2,3]-indeno[5,6-b]furan-5(2H)-one
  参考文献：
  名称：

  Rates of Hexadehydro-Diels–Alder (HDDA) Cyclizations: Impact of the Linker Structure

  摘要：

  The rates of the hexadehydro-Diels-Alder (HDDA) reaction of substrates containing, minimally, a 1,3,8-triyne subunit are reported. Several series of related substrates, differing in the nature of the three-atom tether that links the 1,3-diyne and diynophile, were examined. Seemingly small changes in substrate structure result in large differences in cyclization rate, spanning more than 8 orders of magnitude. The reactivity trends revealed by these studies should prove useful in guiding substrate design and choice of reaction conditions in future applications.

  DOI：

  10.1021/ol502131r
• 作为产物：
  描述：

  在 sodium hydroxide 作用下， 以 正己烷 为溶剂， 反应 3.0h， 生成 tert-butyl(hexa-3,5,-diyn-1-yloxy)dimethylsilane
  参考文献：
  名称：

  Regio- and stereoselectivity in the concatenated enyne cross metathesis–metallotropic [1,3]-shift of terminal 1,3-diyne

  摘要：

  Enyne cross metathesis of terminal 1,3-diynes with various alkenes afforded two products of distinctive connectivity, as the result of a uniform mode of initiation but different modes of termination events with or without metallotropic [1,3]-shift. Steric and electronic factors of the substituents on the 1,3-diynes play an important role in controlling the metallotropic [1,3]-shift of the propagating allcylidene intermediates and their regioselective trapping to the final products. (C) 2013 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tet.2013.08.024

文献信息

• The hexadehydro-Diels–Alder reaction
  作者：Thomas R. Hoye、Beeraiah Baire、Dawen Niu、Patrick H. Willoughby、Brian P. Woods

  DOI：10.1038/nature11518

  日期：2012.10.11

  produce the highly reactive benzyne intermediate. The reaction conditions for this simple, thermal transformation are notable for being free of metals and reagents. The subsequent and highly efficient trapping reactions increase the power of the overall process. Finally, we provide examples of how this de novo benzyne generation approach allows new modes of intrinsic reactivity to be revealed.

  芳炔（形式上包含碳-碳三键的芳香系统）是有机化学中所有反应性中间体中用途最广泛的。它们可以被“捕获”以产生用作药物、农用化学品、染料、聚合物和其他精细化学品的产品。在这里，我们探索了一种策略，该策略通过六氢-Diels-Alder 反应将苄的从头生成与它们原位加工成结构复杂的苯类产物相结合。在六氢-Diels-Alder 反应中，1,3-二炔与“亲二炔体”发生 [4+2] 环异构化反应，生成高反应性苯炔中间体。这种简单的热转化的反应条件以不含金属和试剂而著称。随后的高效捕集反应增加了整个过程的能力。
• Differential Scanning Calorimetry (DSC) as a Tool for Probing the Reactivity of Polyynes Relevant to Hexadehydro-Diels–Alder (HDDA) Cascades
  作者：Brian P. Woods、Thomas R. Hoye

  DOI：10.1021/ol503162k

  日期：2014.12.19

  The differential scanning calorimetry (DSC) behavior of a number of alkyne-rich compounds is described. The DSC trace for each compound exhibits an exothermic event at a characteristic onset temperature. For the tri- and tetraynes whose [4 + 2] HDDA reactivity in solution has been determined, these onset temperatures show a strong correlation with the cyclization activation energy. The studies reported here exemplify how the data available through this operationally simple analytical technique can give valuable insights into the thermal behavior of small molecules.