1,4-ethyleneisochroman-3-one | 4708-20-7

• 分子结构分类: 有机化合物 - 苯类化合物 - 四氢化萘
• 英文名称: 1,4-ethyleneisochroman-3-one
• 英文别名: 1,2,3,4-Tetrahydro-1,4-(epoxymethano)naphthalen-9-one；9-oxatricyclo[6.2.2.02,7]dodeca-2,4,6-trien-10-one
• CAS: 4708-20-7
• 化学式: C₁₁H₁₀O₂
• 分子量: 174.199
• InChiKey: HXMICCSUBZKMLS-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.8
• 重原子数：
  13
• 可旋转键数：
  0
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.36
• 拓扑面积：
  26.3
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为产物：
  描述：

  1,4-环氧基-1,2,3,4-四氢萘 、 二氧化碳 在 萘 、 lithium 作用下， 生成 1,4-ethyleneisochroman-3-one
  参考文献：
  名称：

  邻苯二酚的还原亲电取代和扩环成异色满衍生物

  摘要：

  在催化量的萘的存在下，邻苯二甲酸1a与锂金属的还原裂解导致形成稳定的芳族二锂化合物。后者与CO 2，醛或酮的加成物闭环成异色满衍生物，导致原始杂环的扩环。还原亲电取代程序已成功地扩展到取代的酞菁1b和1c，以令人满意的产率提供了相应的异色满-3one。

  DOI：

  10.1016/0040-4039(95)01692-b

文献信息

• Reductive electrophilic substitution of phthalans and ring expansion to isochroman derivatives
  作者：Ugo Azzena、Salvatore Demartis、Maria Giovanna Fiori、Giovanni Melloni、Luisa Pisano

  DOI：10.1016/0040-4039(95)01692-b

  日期：1995.10

  of a stable aromatic dilithium compound. The adducts of the latter with CO2, aldehydes or ketones undergo ring closure to isochroman derivatives, leading to ring expansion of the original heterocycle. The reductive electrophilic substitution procedure was successfully extended to the substituted phthalans 1b and 1c, to afford the corresponding isochroman-3ones in satisfactory yields.

  在催化量的萘的存在下，邻苯二甲酸1a与锂金属的还原裂解导致形成稳定的芳族二锂化合物。后者与CO 2，醛或酮的加成物闭环成异色满衍生物，导致原始杂环的扩环。还原亲电取代程序已成功地扩展到取代的酞菁1b和1c，以令人满意的产率提供了相应的异色满-3one。
• Electron-Transfer-Induced Reductive Cleavage of Phthalans:  Reactivity and Synthetic Applications
  作者：Ugo Azzena、Salvatore Demartis、Giovanni Melloni

  DOI：10.1021/jo9604548

  日期：1996.1.1

  The behavior of phthalan (1a) was investigated under conditions of electron transfer from alkali metals in aprotic solvents. Reaction with lithium in the presence of a catalytic amount of naphthalene in THF led to the reductive cleavage of an arylmethyl carbon-oxygen bond, with formation of a stable dilithium compound. Trapping of this intermediate with several electrophiles (alkyl halides, carbonyl derivatives, CO2) was successful. The extension of this procedure to several substituted phthalans (1b-i) was investigated, and the regiochemistry as well as the synthetic usefulness of these reactions are discussed.