(E)-5-(1,4-Dioxa-spiro[4.5]dec-6-yl)-pent-2-enoic acid ethyl ester | 164525-54-6

• 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: (E)-5-(1,4-Dioxa-spiro[4.5]dec-6-yl)-pent-2-enoic acid ethyl ester
• 英文别名: ethyl (E)-5-(1,4-dioxaspiro[4.5]decan-6-yl)pent-2-enoate
• CAS: 164525-54-6
• 化学式: C₁₅H₂₄O₄
• 分子量: 268.353
• InChiKey: FMPJMZQCBLZFCI-RUDMXATFSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.7
• 重原子数：
  19
• 可旋转键数：
  6
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.8
• 拓扑面积：
  44.8
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  (E)-5-(1,4-Dioxa-spiro[4.5]dec-6-yl)-pent-2-enoic acid ethyl ester 在 对甲苯磺酸 作用下， 以 甲醇 、 水 为溶剂， 生成 (E)-5-(2-Oxo-cyclohexyl)-pent-2-enoic acid ethyl ester
  参考文献：
  名称：

  Visible Light Initiated Photosensitized Electron Transfer Cyclizations of Aldehydes and Ketones to Tethered α,β-Unsaturated Esters:  Stereoselective Synthesis of Optically Pure C-Furanosides

  摘要：

  Photosensitized one-electron reductive activation of aldehydes/ketones tethered with activated olefins leads to efficient cyclization to give diastereoselective cycloalkanols in high yield. The activation is promoted by secondary and dark electron transfer from visible light (405 nm) initiated photosensitized electron transfer generated 9,10-dicyanoanthracene radical anion (DCA(.-)). The DCA(.-) is produced by electron transfer using either triphenylphosphine (Ph3P) as sacrificial electron donor (PS-A) or 1,5-dimethoxynaphthalene (DMN) as primary electron donor and ascorbic acid as sacrificial electron donor (PS-B), to light-absorbing DCA. The cyclization is suggested to involve ketyl radical intermediate. High trans diastereoselectivity is observed during the formation of cycloalkanols. This cyclization strategy is further extended for the stereoselective synthesis of optically pure C-furanoside (41), starting from naturally occuring L-tartaric acid. The stereochemistry of 41 is suggested based on the single-crystal X-ray diffraction data.

  DOI：

  10.1021/jo9702812
• 作为产物：
  描述：

  3-(1,4-dioxaspiro[4,5]dec-6-yl)propan-1-ol 在 草酰氯 、 二甲基亚砜 、 三乙胺 作用下， 以 二氯甲烷 为溶剂， 反应 48.0h， 生成 (E)-5-(1,4-Dioxa-spiro[4.5]dec-6-yl)-pent-2-enoic acid ethyl ester
  参考文献：
  名称：

  Visible Light Initiated Photosensitized Electron Transfer Cyclizations of Aldehydes and Ketones to Tethered α,β-Unsaturated Esters:  Stereoselective Synthesis of Optically Pure C-Furanosides

  摘要：

  Photosensitized one-electron reductive activation of aldehydes/ketones tethered with activated olefins leads to efficient cyclization to give diastereoselective cycloalkanols in high yield. The activation is promoted by secondary and dark electron transfer from visible light (405 nm) initiated photosensitized electron transfer generated 9,10-dicyanoanthracene radical anion (DCA(.-)). The DCA(.-) is produced by electron transfer using either triphenylphosphine (Ph3P) as sacrificial electron donor (PS-A) or 1,5-dimethoxynaphthalene (DMN) as primary electron donor and ascorbic acid as sacrificial electron donor (PS-B), to light-absorbing DCA. The cyclization is suggested to involve ketyl radical intermediate. High trans diastereoselectivity is observed during the formation of cycloalkanols. This cyclization strategy is further extended for the stereoselective synthesis of optically pure C-furanoside (41), starting from naturally occuring L-tartaric acid. The stereochemistry of 41 is suggested based on the single-crystal X-ray diffraction data.

  DOI：

  10.1021/jo9702812

文献信息

• Stereochemical Investigations of Samarium(II) Iodide-Promoted 5-Exo and 6-Exo Ketyl-Olefin Radical Cyclization Reactions
  作者：Gary A. Molander、Jeffrey A. McKie

  DOI：10.1021/jo00109a018

  日期：1995.2

  Samarium(II) iodide (SmI2)-promoted ketyl cyclizations of several substituted, unsaturated ketones, providing various cyclopentyl and cyclohexyl systems, have been investigated. The resulting experiments provide stereochemical insight into these reactions and in addition outline the synthetic potential of these 5-exe and 6-exo radical cyclization processes.
• Visible Light Initiated Photosensitized Electron Transfer Cyclizations of Aldehydes and Ketones to Tethered α,β-Unsaturated Esters:  Stereoselective Synthesis of Optically Pure <i>C</i>-Furanosides
  作者：Ganesh Pandey、Saumen Hajra、Manas K. Ghorai、K. Ravi Kumar

  DOI：10.1021/jo9702812

  日期：1997.8.1

  Photosensitized one-electron reductive activation of aldehydes/ketones tethered with activated olefins leads to efficient cyclization to give diastereoselective cycloalkanols in high yield. The activation is promoted by secondary and dark electron transfer from visible light (405 nm) initiated photosensitized electron transfer generated 9,10-dicyanoanthracene radical anion (DCA(.-)). The DCA(.-) is produced by electron transfer using either triphenylphosphine (Ph3P) as sacrificial electron donor (PS-A) or 1,5-dimethoxynaphthalene (DMN) as primary electron donor and ascorbic acid as sacrificial electron donor (PS-B), to light-absorbing DCA. The cyclization is suggested to involve ketyl radical intermediate. High trans diastereoselectivity is observed during the formation of cycloalkanols. This cyclization strategy is further extended for the stereoselective synthesis of optically pure C-furanoside (41), starting from naturally occuring L-tartaric acid. The stereochemistry of 41 is suggested based on the single-crystal X-ray diffraction data.