(Z)-2-ethyl-5-trimethylsilanylpent-2-en-4-yn-1-ol | 250358-90-8

• 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: (Z)-2-ethyl-5-trimethylsilanylpent-2-en-4-yn-1-ol
• 英文别名: (Z)-2-ethyl-5-trimethylsilylpent-2-en-4-yn-1-ol
• CAS: 250358-90-8
• 化学式: C₁₀H₁₈OSi
• 分子量: 182.338
• InChiKey: LGEIJNBNJZQIRP-YFHOEESVSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.2
• 重原子数：
  12
• 可旋转键数：
  3
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.6
• 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-ethyl-5-trimethylsilanylpent-2-en-4-yn-1-ol 在 四丁基氟化铵 作用下， 反应 3.0h， 以94%的产率得到4-ethyl-2-methylfuran
  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
• 作为产物：
  描述：

  (Z)-2-ethyl-3-iodoprop-2-en-1-ol 、 三甲基乙炔基硅 在 四(三苯基膦)钯 四氢吡咯 、 copper(l) iodide 作用下， 反应 4.0h， 以88%的产率得到(Z)-2-ethyl-5-trimethylsilanylpent-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 Oxidative Aminocarbonylation of Alkynols
  作者：Pierluigi Plastina、Bartolo Gabriele、Giuseppe Salerno

  DOI：10.1055/s-2007-983828

  日期：2007.10

  Alkynols undergo palladium-catalyzed aminocarbonylation leading to the direct formation of different heterocyclic derivatives, depending on the position of the OH group with respect to the triple bond. In the cases of 4-yn-1-ols and (Z)-2-en-4-yn-1-ols, the initially formed 2-ynamide intermediates, respectively, undergo cyclization leading to tetrahydrofuran derivatives or 2-furan-2-ylacetamides, respectively. In the case of 2-yn-1-ols, the aminocarbonylation products undergo intermolecular conjugate addition, followed by lactonization, leading to aminofuranones.

  炔醇在钯催化下进行氨基羰基化反应，根据羟基相对于三键的位置，可以直接形成不同的杂环衍生物。对于4-炔-1-醇和(Z)-2-烯-4-炔-1-醇，初始形成的2-炔酰胺中间体分别经历环化反应，分别生成四氢呋喃衍生物或2-呋喃-2-基乙酰胺。对于2-炔-1-醇，氨基羰基化产物经历分子间的共轭加成，随后进行内酯化，生成氨基呋喃酮。
• General and Regioselective Synthesis of Substituted Pyrroles by Metal-Catalyzed or Spontaneous Cycloisomerization of (<i>Z</i>)-(2-En-4-ynyl)amines
  作者：Bartolo Gabriele、Giuseppe Salerno、Alessia Fazio

  DOI：10.1021/jo034850j

  日期：2003.10.1

  A general and regioselective synthesis of substituted pyrroles 2 by cycloisomerization of readily available (Z)-(2-en-4-ynyl)amines 1 is reported. Spontaneous cycloisomerization leading to 2 occurred in the course of preparation of enynamines bearing a terminal triple bond or a triple bond substituted with a phenyl or a CH2OTHP group. When the triple bond was substituted with an alkyl or alkenyl group

  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。
• An Easy and Convenient Synthesis of 2-Furan-2-ylacetamides by Sequential Palladium-Catalyzed Oxidative Aminocarbonylation of (<i>Z</i>)-2-En-4-yn-1-ols/Conjugate Addition/Aromatization
  作者：Bartolo Gabriele、Pierluigi Plastina、Giuseppe Salerno、Raffaella Mancuso

  DOI：10.1055/s-2006-950360

  日期：——

  A simple and convenient synthesis of 2-furan-2-ylacet-amides 4 starting from readily available (Z)-2-en-4-yn-1-ols 1 is reported. The method is based on a PdI 2 -catalyzed oxidative aminocarbonylation of the triple bond of 1 to give the corresponding 2-ynamide intermediates 2, which undergo intramolecular conjugate addition to give 2-(5H-furan-2-ylidene)acetamide derivatives 3. Spontaneous or one-pot

  报道了一种从容易获得的 (Z)-2-en-4-yn-1-ols 1 开始的简单方便的 2-furan-2-ylacet-amides 4 合成方法。该方法基于 PdI 2 催化的 1 的三键氧化氨基羰基化，得到相应的 2-ynamide 中间体 2，其经过分子内共轭加成得到 2-(5H-furan-2-ylidene)acetamide 衍生物 3。 3 的自发或一锅酸促进芳构化最终导致最终的呋喃乙酰胺衍生物 4。
• 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.
• A General and Facile Synthesis of Substituted Furans by Palladium-Catalyzed Cycloisomerization of (<i>Z</i>)-2-En-4-yn-1-ols
  作者：Bartolo Gabriele、Giuseppe Salerno、Egidio Lauria

  DOI：10.1021/jo990847h

  日期：1999.10.1

  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.