1-Triaethylsilyl-4-phenyl-buta-1,3-diin | 32117-58-1

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: 1-Triaethylsilyl-4-phenyl-buta-1,3-diin
• 英文别名: 1-Phenyl-4-(triaethyl)silyl-butadiin；Triethyl(4-phenylbuta-1,3-diynyl)silane
• CAS: 32117-58-1
• 化学式: C₁₆H₂₀Si
• 分子量: 240.42
• InChiKey: AWAYTZDOSHJYQS-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.09
• 重原子数：
  17
• 可旋转键数：
  6
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.38
• 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-Triaethylsilyl-4-phenyl-buta-1,3-diin 在 咪唑 、 iron(III) chloride 、 1,1'-双(二苯基膦)二茂铁 、 cobalt acetylacetonate 作用下， 以 四氢呋喃 、 水 、 乙腈 为溶剂， 反应 18.0h， 生成
  参考文献：
  名称：

  Cobalt-Catalyzed Regiodivergent Stereoselective Hydroboration of 1,3-Diynes To Access Boryl-Functionalized Enynes

  摘要：

  We report a regiodivergent and stereoselective hydroboration of 1,3-diynes with pinacolborane (HBpin) in the presence of cobalt catalysts generated in situ from bench-stable Co(acac)(2) and bisphosphine ligands. These cobalt catalysts were activated by the reactions with HBpin. A range of unsymmetrical and symmetrical 1,3-diynes reacted smoothly with HBpin in the presence of Co(acac)(2)/xantphos to selectively afford enynylboronate products with boron addition to the internal carbon of the 1,3-diyne unit. However, these 1,3-diynes reacted in the presence of Co(acac)(2)/dppf to form enynylboronate products with boron addition to the external carbon of the 1,3-diyne unit. These hydroboration reactions show good functional group compatibility and can be readily scaled up to gram-scales without using a drybox. Deuterium-labeling experiments suggest a cis-addition of HBpin to the less-hindered triple bond of 1,3-diynes. Furthermore, the comparison of the regioselectivity between cobalt-catalyzed hydrosilylation and hydroboration reactions of the same 1,3-diyne substrate suggests that Co(acac)(2)/xantphos-catalyzed regioselective 1,3-diyne hydroboration proceeds through a cobalt-hydride intermediate while Co(acac)(2)/dppf-catalyzed 1,3-diyne hydroboration proceed through a cobalt boryl intermediate.

  DOI：

  10.1021/acscatal.9b03139
• 作为产物：
  描述：

  1-bromo-2-triethylsilylacetylene 、 苯乙炔 在 盐酸羟胺 、 乙胺 、 copper(l) chloride 作用下， 生成 1-Triaethylsilyl-4-phenyl-buta-1,3-diin
  参考文献：
  名称：

  甲硅烷基化作为Cadiot-Chodkiewicz偶联的一种保护方法：芳基-丁二炔和-己三炔的合成

  摘要：

  Cadiot-Chodkiewicz arylacetylenes的联接器（I），XC 6 H ^ 4 CCH（X = H;米-Br，-Me; p -F，-NO 2，-OMe）与溴乙炔基（三乙基）硅烷（II）， BrCCSiEt 3，得到甲硅烷基化二炔，XC 6 H ^ 4（CC）2 SIET 3，从该终端二炔（III），XC 6 H ^ 4 CC）2 H，通过与水性处理定量地释放甲醇碱。反过来II与III的反应生成甲硅烷基化三炔，XC 4 ħ 4 CC）3 SIET 3，用碱生成游离的芳基六炔，XC 6 H 4（CC）3 H（IV）。II，BrCCGeEt的锗类似物3，同样地夫妇I（X = H，p -NO 2），得到XC 6 H ^ 4（CC）2 GEET 3或III，得到XC 6 H ^ 4（C C）3 GeEt 3。产物（X = H）与从格氏试剂，C 6 H 5（CC）n

  DOI：

  10.1016/0040-4020(72)80040-1

文献信息

• Cobalt-Catalyzed Regio- and Stereoselective Hydrosilylation of 1,3-Diynes To Access Silyl-Functionalized 1,3-Enynes
  作者：Hui Leng Sang、Yongyi Hu、Shaozhong Ge

  DOI：10.1021/acs.orglett.9b01836

  日期：2019.7.5

  A regio- and stereoselective hydrosilylation of 1,3-diynes has been developed relying on catalysts generated from bench-stable Co(acac)2 and dppp ligand. A variety of symmetrical and unsymmetrical 1,3-diynes undergo this transformation, yielding the corresponding silyl-functionalized 1,3-enynes in high yields with excellent regioselectivity. Gram-scale reactions and further transformations of the silyl-containing

  1，3-二炔的区域和立体选择性氢化硅烷化已经开发出来，它依赖于稳定的Co（acac）2和dppp配体产生的催化剂。各种对称和不对称的1,3-二炔都经历了这种转变，以高收率和良好的区域选择性产生了相应的甲硅烷基官能化的1,3-烯炔。含甲硅烷基的1,3-烯炔产物的克级反应和进一步转化突出了这种1,3-二炔共催化氢化硅烷化反应的合成效用。
• Rates of base cleavage of X·C₆H₄·[CC]_n·MEt₃compounds (n= 2 and 3, M = Si and Ge), and their significance for theories of substituent effects
  作者：C. Eaborn、R. Eastmond、D. R. M. Walton

  DOI：10.1039/j29710000127

  日期：——

  The rates of cleavage of X·C6H4·[CC]n·MEt3 compounds (n= 2 and 3, M = Si and Ge) by aqueous-methanolic alkali at 29·6 °C have been measured spectrophotometrically. The ease of cleavage increases as n is raised; e.g., for the C6H5·[CC]n·SiEt3 compounds with n= 1, 2, and 3 the approximate relative rates are 1 : 240 : 4100. Germanium compounds are less reactive than the corresponding silicon compounds.The rates of cleavage of X·C6H4·[CC]3·SiEt3 compounds with X =p-OMe, H, p-F, m-Br, and p-NO2 correlate well with the simple Hammett substituent constants, σ, which normally refer to reactions involving markedly smaller distances between the substituent X and the reaction site. This casts some doubt on the validity of treatments of substituent effects which involve separation into (a) field effects which depend only on the distance between the substituent site and the reaction site, and (b) resonance effects which depend on the effectiveness of conjugation between the sites. Substituent constants calculated according to one such treatment (that by Dewar and Grisdale) are less satisfactory than σ-constants for the cleavages studied.

  采用分光光度法测量了 29·6 °C 的甲醇碱水溶液对 X·C6H4·[CC]n·MEt3 化合物（n= 2 和 3，M = Si 和 Ge）的裂解速率。随着n的增加，裂解的容易程度增加；例如，对于 n= 1、2 和 3 的 C6H5·[CC]n·SiEt3 化合物，近似相对速率为 1 : 240 : 4100。 锗化合物的反应性低于相应的硅化合物。 X 的裂解速率· ·[CC]3·SiEt3 化合物，其中 X =p-OMe、H、p-F、m-Br 和 p-NO2 与简单的 Hammett 取代基常数 σ 密切相关，该常数通常指涉及之间距离明显更小的反应取代基X和反应位点。这对取代基效应处理的有效性产生了一些疑问，取代基效应涉及分为（a）场效应，仅取决于取代基位点和反应位点之间的距离，以及（b）共振效应，取决于取代基位点和反应位点之间的共轭有效性。网站。根据一种此类处理（由 Dewar 和 Grisdale 进行）计算的取代基常数不如所研究的裂解的 σ 常数令人满意。