methyl cis-9-(tert-butyldimethylsiloxy)-7-nonen-2-ynoate | 159009-89-9

• 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: methyl cis-9-(tert-butyldimethylsiloxy)-7-nonen-2-ynoate
• CAS: 159009-89-9
• 化学式: C₁₆H₂₈O₃Si
• 分子量: 296.482
• InChiKey: DTCWPBBLHRBGEH-BENRWUELSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.91
• 重原子数：
  20.0
• 可旋转键数：
  6.0
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.69
• 拓扑面积：
  35.53
• 氢给体数：
  0.0
• 氢受体数：
  3.0

反应信息

• 作为反应物：
  描述：

  methyl cis-9-(tert-butyldimethylsiloxy)-7-nonen-2-ynoate 在 吡啶 、 三溴化磷 、 sodium hydride 、 溶剂黄146 作用下， 以 四氢呋喃 、 乙醚 、 正己烷 为溶剂， 反应 6.84h， 生成 methyl cis-10,10-dicarbomethoxy-7-tridecen-2,12-diynoate
  参考文献：
  名称：

  Pd-Catalyzed Cycloisomerization to 1,2- Dialkylidenecycloalkanes. 1

  摘要：

  Enhancing synthetic efficiency requires the development of synthetic reactions that, to the extent possible, are simple additions wherein everything else is required only in catalytic amounts. The Alder ene reaction constitutes a classical reaction that meets this requirement that has much unrealized potential. A transition-metal-catalyzed version helps to increase that potential by permitting this reaction to proceed under mild conditions. A significant benefit of transition metal catalysis is the feasibility of diverting the reaction along pathways not feasible under thermal conditions. The synthesis of 1,3-dienes rather than 1,4-dienes is a very important diversion because of the utility of 1,3-dienes as reaction partners in the Diels-Alder reaction, another highly atom economical process. A catalyst derived from palladium acetate cycloisomerizes 1,6- and 1,7-enynes to dialkylidenecyclopentanes and -cyclohexanes. 1,3-Diene formation is favored over the Alder ene process by both steric and electronic effects. The reaction is highly chemoselective-tolerating a wide diversity of functionality including hydroxyl groups, ketones, esters, alkynyl and enol ethers, alkynyl and vinyl silanes, and enones. Many of the substrates are available by palladium-catalyzed alkylation reactions-highlighting the effectiveness of palladium catalyzed methodology in organic synthesis. The atom-economical nature of these reactions combined with the Diels-Alder reaction permit butadiene and dimethyl propargylmalonate to be molded into a polyhydro-as-indacene. The mechanism of this reaction may involve a tautomerization of an enyne-Pd(+2) complex to a pallada(+4)cyclopentene intermediate as a key step.

  DOI：

  10.1021/ja00089a015
• 作为产物：
  描述：

  叔丁基二甲基(2-丙炔氧基)硅烷 在 甲醇 、 四(三苯基膦)钯 、 正丁基锂 、 bis(cyclohexanyl)borane 、 碘 、 potassium carbonate 、 magnesium 、 溶剂黄146 、 zinc(II) chloride 作用下， 反应 9.75h， 生成 methyl cis-9-(tert-butyldimethylsiloxy)-7-nonen-2-ynoate
  参考文献：
  名称：

  Pd-Catalyzed Cycloisomerization to 1,2- Dialkylidenecycloalkanes. 1

  摘要：

  Enhancing synthetic efficiency requires the development of synthetic reactions that, to the extent possible, are simple additions wherein everything else is required only in catalytic amounts. The Alder ene reaction constitutes a classical reaction that meets this requirement that has much unrealized potential. A transition-metal-catalyzed version helps to increase that potential by permitting this reaction to proceed under mild conditions. A significant benefit of transition metal catalysis is the feasibility of diverting the reaction along pathways not feasible under thermal conditions. The synthesis of 1,3-dienes rather than 1,4-dienes is a very important diversion because of the utility of 1,3-dienes as reaction partners in the Diels-Alder reaction, another highly atom economical process. A catalyst derived from palladium acetate cycloisomerizes 1,6- and 1,7-enynes to dialkylidenecyclopentanes and -cyclohexanes. 1,3-Diene formation is favored over the Alder ene process by both steric and electronic effects. The reaction is highly chemoselective-tolerating a wide diversity of functionality including hydroxyl groups, ketones, esters, alkynyl and enol ethers, alkynyl and vinyl silanes, and enones. Many of the substrates are available by palladium-catalyzed alkylation reactions-highlighting the effectiveness of palladium catalyzed methodology in organic synthesis. The atom-economical nature of these reactions combined with the Diels-Alder reaction permit butadiene and dimethyl propargylmalonate to be molded into a polyhydro-as-indacene. The mechanism of this reaction may involve a tautomerization of an enyne-Pd(+2) complex to a pallada(+4)cyclopentene intermediate as a key step.

  DOI：

  10.1021/ja00089a015