(E)-dimethyl 2-iodomethylenecyclopentane-1,1-dicarboxylate | 138770-07-7

• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 羧酸及其衍生物
• 英文名称: (E)-dimethyl 2-iodomethylenecyclopentane-1,1-dicarboxylate
• 英文别名: 2-((E)-iodomethylene)-1,1-bis(methoxycarbonyl)cyclopentane；(E)-1,1-dicarbomethoxy-2-(iodomethylene)cyclopentane；dimethyl (2E)-2-(iodomethylidene)cyclopentane-1,1-dicarboxylate
• CAS: 138770-07-7
• 化学式: C₁₀H₁₃IO₄
• 分子量: 324.115
• InChiKey: YRWMNJLBVIGOOY-VOTSOKGWSA-N

物化性质

• 沸点：
  304.0±42.0 °C(Predicted)
• 密度：
  1.781±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  1.9
• 重原子数：
  15
• 可旋转键数：
  4
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.6
• 拓扑面积：
  52.6
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  (E)-dimethyl 2-iodomethylenecyclopentane-1,1-dicarboxylate 、 苯硼酸 在 四(三苯基膦)钯 、 sodium carbonate 作用下， 以 甲醇 、 水 、 甲苯 为溶剂， 反应 5.0h， 以76%的产率得到(E)-1,1-dimethoxycarbonyle-2-benzylidene 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
• 作为产物：
  描述：

  Dimethyl 2-(3-methylsulfonyloxypropyl)cycloprop-2-ene-1,1-dicarboxylate 在 sodium carbonate 、 sodium iodide 作用下， 以 丙酮 为溶剂， 反应 0.83h， 以81%的产率得到(E)-dimethyl 2-iodomethylenecyclopentane-1,1-dicarboxylate
  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。
• Ionic iodocarbocyclization reactions of 4-alkenyl- and 4-alkynylmalonate derivatives
  作者：Osamu Kitagawa、Tadashi Inoue、Keiko Hirano、Takeo Taguchi

  DOI：10.1021/jo00063a033

  日期：1993.5

  The cyclization reactions of dimethyl 4-alkenylmalonate derivatives la-d in the presence Of 12 and Ti(Ot-Bu)4 proceed in a highly regio- and stereocontrolled manner (5-exo cyclization and trans addition) to give (iodoalkyl)cyclopentane derivatives 2 or bicyclic lactones 3 through the displacement of the iodide of 2 by an ester group. Iodocarbocyclization reactions of dimethyl [(cycloalkenyl)alkyl]malonates 1g-i or dimethyl [(methylenecycloalkyl)alkyl]malonates 1j and 1k proceed regio- and stereoselectively to give fused ring compounds or spiro compounds, respectively, as single isomers. Similar reactions of 4-alkynyl derivatives 5 give preferentially E-iodomethylene cyclopentane derivatives 6. An ionic mechanism rather than a radical mechanism is suggested on the basis of the regioselectivity and stereospecificity of the above reactions.
• Carbocyclization Reaction of Active Methine Compounds with Unactivated Alkenyl or Alkynyl Groups Mediated by TiCl₄−Et₃N
  作者：Osamu Kitagawa、Takashi Suzuki、Tadashi Inoue、Yoko Watanabe、Takeo Taguchi

  DOI：10.1021/jo981603k

  日期：1998.12.1

  In the presence of TiCl4, Et3N, and I-2, iodocarbocyclization reaction of various active methine compounds having alkenyl groups gave iodocycloalkane derivatives in good yields. On the other hand, TiCl4 and Et3N promote the carbocyclization of active methine compounds with 4-alkynyl groups in the absence of I-2 to give methylenecyclopentane derivatives in good yields. This reaction proceeds with high streoselectivity through a cis-addition of trichlorotitanium enolates of active methine compounds to alkynes, and the resulting vinyltitanium intermediates can be further functionalized by the reaction with various electrophiles.