2-((E)-3-phenylprop-2-ynylidene)-1,1-bis(methoxycarbonyl)cyclopentane | 138770-02-2

• 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: 2-((E)-3-phenylprop-2-ynylidene)-1,1-bis(methoxycarbonyl)cyclopentane
• 英文别名: dimethyl (2E)-2-(3-phenylprop-2-ynylidene)cyclopentane-1,1-dicarboxylate
• CAS: 138770-02-2
• 化学式: C₁₈H₁₈O₄
• 分子量: 298.339
• InChiKey: BIRZIBBRYMFZME-RVDMUPIBSA-N

物化性质

• 沸点：
  388.2±42.0 °C(Predicted)
• 密度：
  1.18±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  3.3
• 重原子数：
  22
• 可旋转键数：
  5
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.33
• 拓扑面积：
  52.6
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为产物：
  描述：

  (E)-dimethyl 2-iodomethylenecyclopentane-1,1-dicarboxylate 、 苯乙炔 在 bis-triphenylphosphine-palladium(II) chloride 、 copper(l) iodide 、 potassium carbonate 作用下， 以 乙腈 为溶剂， 反应 24.0h， 以94%的产率得到2-((E)-3-phenylprop-2-ynylidene)-1,1-bis(methoxycarbonyl)cyclopentane
  参考文献：
  名称：

  An X⁻ (X = I, Br)-Triggered Ring-Opening Cyclization of Cyclopropenyl-Substituted Alkyl Halides or Mesylates: An Efficient and Highly Regio- and Stereoselective Approach to (E)-Haloalkylidene 4−7-Membered Cyclic Compounds

  摘要：

  Polyfunctionalized (E)-haloalkylidene cyclic products were efficiently synthesized in moderate to excellent yields via a regio- and stereoselective X- (X = I or Br)-triggered ring-opening intramolecular trapping of cyclopropenes 1. The reaction can be used for construction of 4-7-membered products. The E-stereoselectivity of the exo-C=C bond is very high. The carbon-halogen bond in the exo-C=C bond may further be elaborated to prepare differently substituted cyclic products with a stereodefined C=C bond.

  DOI：

  10.1021/jo900389m

文献信息

• Synthesis of ethynylidene cyclopentanes by a cyclisation catalyzed by the simultaneous presence of palladium (0) and copper (I)
  作者：Didier Bouyssi、Geneviève Balme、Jacques Gore

  DOI：10.1016/0040-4039(91)80215-r

  日期：1991.11

  Ethynylidene cyclopentanes can be formed in 35–71% yield from the reaction of the enolates of compounds such as δ-acetylenic malonates with 1-halogeno-1-alkynes. This reaction requires catalysis by both palladium (0) and copper (I) species.

  乙炔基丙二酸酯等化合物的烯醇化物与1-卤代-1-炔烃的反应可形成亚乙基环戊烷，产率为35-71％。该反应需要钯（0）和铜（I）物种的催化。
• An X⁻ (X = I, Br)-Triggered Ring-Opening Cyclization of Cyclopropenyl-Substituted Alkyl Halides or Mesylates: An Efficient and Highly Regio- and Stereoselective Approach to (<i>E)</i>-Haloalkylidene 4−7-Membered Cyclic Compounds
  作者：Jie Chen、Shengming Ma

  DOI：10.1021/jo900389m

  日期：2009.8.7

  Polyfunctionalized (E)-haloalkylidene cyclic products were efficiently synthesized in moderate to excellent yields via a regio- and stereoselective X- (X = I or Br)-triggered ring-opening intramolecular trapping of cyclopropenes 1. The reaction can be used for construction of 4-7-membered products. The E-stereoselectivity of the exo-C=C bond is very high. The carbon-halogen bond in the exo-C=C bond may further be elaborated to prepare differently substituted cyclic products with a stereodefined C=C bond.