(E)-7-(5-Methyl-2,5-dihydro-2-oxo-3-furanyl)hept-6-enal | 207864-45-7

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 二氢呋喃
• 英文名称: (E)-7-(5-Methyl-2,5-dihydro-2-oxo-3-furanyl)hept-6-enal
• CAS: 207864-45-7
• 化学式: C₁₂H₁₆O₃
• 分子量: 208.257
• InChiKey: KYKXXXNIMFSGGR-FNORWQNLSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.17
• 重原子数：
  15.0
• 可旋转键数：
  6.0
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.5
• 拓扑面积：
  43.37
• 氢给体数：
  0.0
• 氢受体数：
  3.0

反应信息

• 作为反应物：
  描述：

  磷酰基乙酸三乙酯 、 (E)-7-(5-Methyl-2,5-dihydro-2-oxo-3-furanyl)hept-6-enal 在 1,8-二氮杂双环[5.4.0]十一碳-7-烯 、 lithium chloride 作用下， 以 乙腈 为溶剂， 反应 2.0h， 以75%的产率得到(2E,8E)-9-(5-Methyl-2-oxo-2,5-dihydro-furan-3-yl)-nona-2,8-dienoic acid ethyl ester
  参考文献：
  名称：

  Studies Directed Towards the Total Synthesis of (+)-Himbacine

  摘要：

  A convergent strategy towards himbacine (1), involving a Julia coupling between aldehyde 5 and sulfone 6 was found to be ineffective. The aldehyde 5 was synthesized via the thermal intramolecular cycloaddition of 4 with preferred formation of the endo-adduct. The Diels-Alder precursor 4 was obtained from butenolide 7, the result of a single-step condensation between the enoate derived from the (Z)-conjugated olefin 12 and 2-acetoxypropanal. In the context of the synthesis of sulfone 6 Taber's method for the synthesis of 2,6-trans-disubstituted piperidine was adapted towards a large scale synthesis of 49, a useful intermediate for the synthesis in this area.

  DOI：

  10.1055/s-1998-5928
• 作为产物：
  描述：

  6-溴正己醇 在 喹啉 、 正丁基锂 、 草酰氯 、 Pd(BaSO₄) 、 氢氟酸 、 氢气 、 三乙胺 、 lithium diisopropyl amide 作用下， 以 四氢呋喃 、 六甲基磷酰三胺 、 乙醚 、 二氯甲烷 、 水 、 二甲基亚砜 、 乙腈 为溶剂， 反应 72.0h， 生成 (E)-7-(5-Methyl-2,5-dihydro-2-oxo-3-furanyl)hept-6-enal
  参考文献：
  名称：

  针对（±）-半胱氨酸的全合成的研究

  摘要：

  根据三烯10的分子内Diels-Alder反应报道了醛11a的合成，三烯10的丁烯内酯-二烯部分是通过将（Z）-烯酸酯5的烯醇与2的缩合反应一步获得的。乙酰氧基丙醛。醛11a具有重要的毒蕈碱受体拮抗剂喜巴因的三环部分的正确立体化学。

  DOI：

  10.1016/0040-4039(95)01520-5

文献信息

• Studies directed towards the total synthesis of (±)-himbacine
  作者：Govert De Baecke、Pierre J. De Clercq

  DOI：10.1016/0040-4039(95)01520-5

  日期：1995.10

  The synthesis of aldehyde 11a is reported based upon the intramolecular Diels-Alder reaction of triene 10, the butenolide-diene part of which was obtained in one step via the condensation of the enolate derived from the (Z)-enoate ester 5 with 2-acetoxypropanal. Aldehyde 11a possesses the correct stereochemistry of the tricyclic part of himbacine, an important muscarine receptor antagonist.

  根据三烯10的分子内Diels-Alder反应报道了醛11a的合成，三烯10的丁烯内酯-二烯部分是通过将（Z）-烯酸酯5的烯醇与2的缩合反应一步获得的。乙酰氧基丙醛。醛11a具有重要的毒蕈碱受体拮抗剂喜巴因的三环部分的正确立体化学。
• Studies Directed Towards the Total Synthesis of (+)-Himbacine
  作者：Sven Hofman

  DOI：10.1055/s-1998-5928

  日期：1998.3

  A convergent strategy towards himbacine (1), involving a Julia coupling between aldehyde 5 and sulfone 6 was found to be ineffective. The aldehyde 5 was synthesized via the thermal intramolecular cycloaddition of 4 with preferred formation of the endo-adduct. The Diels-Alder precursor 4 was obtained from butenolide 7, the result of a single-step condensation between the enoate derived from the (Z)-conjugated olefin 12 and 2-acetoxypropanal. In the context of the synthesis of sulfone 6 Taber's method for the synthesis of 2,6-trans-disubstituted piperidine was adapted towards a large scale synthesis of 49, a useful intermediate for the synthesis in this area.