(Z)-2-ethylnon-2-en-4-yn-1-ol | 250358-87-3

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 脂肪酰基
• 英文名称: (Z)-2-ethylnon-2-en-4-yn-1-ol
• CAS: 250358-87-3
• 化学式: C₁₁H₁₈O
• 分子量: 166.263
• InChiKey: VWXCZSDPINKENX-LUAWRHEFSA-N

物化性质

• 沸点：
  277.3±23.0 °C(Predicted)
• 密度：
  0.901±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  3.4
• 重原子数：
  12
• 可旋转键数：
  4
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.64
• 拓扑面积：
  20.2
• 氢给体数：
  1
• 氢受体数：
  1

反应信息

• 作为反应物：
  描述：

  (Z)-2-ethylnon-2-en-4-yn-1-ol 在 吡啶 、 三溴化磷 作用下， 以 乙醚 、 乙醇 、 N,N-二甲基甲酰胺 为溶剂， 生成 (Z)-butyl(2-ethylnon-2-en-4-ynyl)amine
  参考文献：
  名称：

  通过金属催化或自发的（Z）-（2-en-4-ynyl）胺的环异构化反应，对取代的吡咯进行一般和区域选择性合成。

  摘要：

  据报道，通过容易获得的（Z）-（2-en-4-炔基）胺1的环异构化，一般和区域选择性地合成取代的吡咯2。在制备带有末端三键或被苯基或CH 2 OTHP基团取代的三键的烯胺的过程中发生自发的环异构化反应，导致2。当三键被烷基或烯基取代时，烯胺是稳定的并且可以通过金属催化转化为相应的吡咯。发现CuCl2是用于在C-3处取代的底物进行环异构化的出色催化剂，而PdX2与KX（X = Cl，I）结合使用则是在C-3处未取代的烯胺反应的优良催化剂。

  DOI：

  10.1021/jo034850j
• 作为产物：
  描述：

  (Z)-2-ethyl-3-iodoprop-2-en-1-ol 、 1-己炔 在 四(三苯基膦)钯 四氢吡咯 、 copper(l) iodide 作用下， 反应 2.0h， 以74%的产率得到(Z)-2-ethylnon-2-en-4-yn-1-ol
  参考文献：
  名称：

  A General and Facile Synthesis of Substituted Furans by Palladium-Catalyzed Cycloisomerization of (Z)-2-En-4-yn-1-ols

  摘要：

  A general and facile synthesis of furans, based on Pd(II)-catalyzed cycloisomerization of (Z)-2-en-4-yn-1-ols, is described. Cycloisomerization reactions are carried out at 25-100 degrees C in the presence of a very simple catalytic system, consisting of K2PdI4, under essentially neutral conditions. This new methodology is very versatile and can be applied to the synthesis of a variety of substituted furans, including particularly fragile, naturally occurring furans such as rosefuran. Efficient synthetic approaches for the regioselective synthesis of suitably substituted (Z)-2-en-4-yn-1-ols have been developed.

  DOI：

  10.1021/jo990847h

文献信息

• Palladium-catalyzed cycloisomerization of ( Z )-(2-en-4-ynyl)amines: a new synthesis of substituted pyrroles
  作者：Bartolo Gabriele、Giuseppe Salerno、Alessia Fazio、Maria R Bossio

  DOI：10.1016/s0040-4039(00)02206-1

  日期：2001.2

  (Z)-(2-En-4-ynyl)amines 1 bearing an internal triple bond undergo smooth cycloisomerization into pyrroles 2 in the presence of catalytic amounts of PdCl2 in conjunction with KCl at 25–100°C in anhydrous N,N-dimethylacetamide. When the triple bond is terminal, spontaneous uncatalyzed cyclization to the corresponding pyrroles takes place.

  （Z）-（2-En-4-ynyl）amines 1带有一个内部三键，在催化量的PdCl 2和KCl的作用下，在25-100°C的无水N，N中经历平滑的环异构化反应，形成吡咯2 -二甲基乙酰胺。当三键为末端时，发生自发的未催化环化为相应的吡咯。
• Novel Synthesis of Substituted Thiophenes by Palladium-Catalyzed Cycloisomerization of (<i>Z</i>)-2-En-4-yne-1-thiols
  作者：Bartolo Gabriele、Giuseppe Salerno、Alessia Fazio

  DOI：10.1021/ol991297c

  日期：2000.2.1

  [reaction: see text] The first example of palladium-catalyzed cycloisomerization of (Z)-2-en-4-yne-1-thiols 1 to give substituted thiophenes 2 is reported. Cycloisomerization reactions are carried out under nitrogen at 25-100 degrees C in N,N-dimethylacetamide as the solvent in the presence of catalytic amounts of PdI2 in conjunction with KI to give the corresponding thiophenes in 43-94% yield.

  [反应：见正文]报告了钯催化的（Z）-2-en-4-yne-1-thiols 1的环异构化反应，得到取代的噻吩2的第一个例子。在催化量的PdI2和KI存在下，在氮气，25-100℃，N，N-二甲基乙酰胺为溶剂的条件下，进行环异构化反应，得到相应的噻吩，收率为43-94％。
• Synthesis of Pyrroles through Coupling of Enyne-hydrazones with Fischer Carbene Complexes
  作者：Yanshi Zhang、James W. Herndon

  DOI：10.1021/ol034414j

  日期：2003.6.1

  The coupling of enyne-imines with Fischer carbene complexes leads to the formation of alkenylpyrrole derivatives. Maximum yields of pyrrole adducts were obtained using N,N-dimethylhydrazones. A mechanism involving alkyne insertion followed by nucleophilic attack of the imine nitrogen at the intermediate alkenylcarbene complex was proposed.
• New Synthetic Approach for the Construction of Multisubstituted 2-Acyl Furans by the IBX-Mediated Cascade Oxidation/Cyclization of<i>cis</i>-2-En-4-yn-1-ols (IBX=2-Iodoxybenzoic Acid)
  作者：Xiangwei Du、Haoyi Chen、Yuanhong Liu

  DOI：10.1002/chem.200801561

  日期：2008.10.29
• An Efficient and General Synthesis of Furan-2-acetic Esters by Palladium-Catalyzed Oxidative Carbonylation of (<i>Z</i>)-2-En-4-yn-1-ols
  作者：Bartolo Gabriele、Giuseppe Salerno、Francesca De Pascali、Mirco Costa、Gian Paolo Chiusoli

  DOI：10.1021/jo990848+

  日期：1999.10.1

  A variety of (Z)-2-en-4-yn-1-ols have been carbonylated under oxidative conditions to give substituted furan-a-acetic esters in good yields. The cyclization-alkoxycarbonylation process occurs in alcoholic media at 50-70 degrees C and under 100 atm pressure of a 9:1 mixture of carbon monoxide and air in the presence of catalytic amounts of PdI2 in conjunction with KI. The proposed reaction pathway involves the in situ isomerization of the initially formed (E)-2-[(alkoxycarbonyl)methylene]-2,5-dihydrofuran species, which in some cases have been isolated and shown to be the intermediates.