6-Ethyltetrahydro-4-methyl-4-(1-methylethenyl)-2H-pyran-2-one

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 内酯类
• 英文名称: 6-Ethyltetrahydro-4-methyl-4-(1-methylethenyl)-2H-pyran-2-one
• 英文别名: 6-Ethyl-4-methyl-4-prop-1-en-2-yloxan-2-one
• 化学式: C₁₁H₁₈O₂
• 分子量: 182.263
• InChiKey: IUYTYQWRCLBNNN-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.2
• 重原子数：
  13
• 可旋转键数：
  2
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.73
• 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：

  1,2-环氧丁烷 、 二氧化碳 、 2,3-二甲基-1,3-丁二烯 生成 6-Ethyltetrahydro-4-methyl-4-(1-methylethenyl)-2H-pyran-2-one
  参考文献：
  名称：

  Direct Synthesis of Spiro .delta.-lactones, Spiro-.gamma.-Lactones, and Alcohols from Substituted (2-Butene-1,4-diyl)magnesium Complexes

  摘要：

  A convenient, one-pot process for the synthesis of spiro delta- and gamma-lactones and alcohols from conjugated dienes mediated by Rieke magnesium is described. This technique involves the treatment of a substituted (2-butene-1,4-diyl)magnesium complex with an epoxide or ketone at -78 degrees C, followed by the addition of carbon dioxide at 0 degrees C to room temperature. After acidic hydrolysis and subsequent warming, a spiro delta- or gamma-lactone accommodating both a quaternary carbon center and vinyl moiety at the beta-position is afforded in good isolated yield. Alternatively, acidic hydrolysis of the initially formed adduct at 0 degrees C furnishes an alcohol containing a quaternary carbon center in good to excellent chemical yield.

  DOI：

  10.1021/jo00121a036

文献信息

• Direct Synthesis of Spiro .delta.-lactones, Spiro-.gamma.-Lactones, and Alcohols from Substituted (2-Butene-1,4-diyl)magnesium Complexes
  作者：Reuben D. Rieke、Matthew S. Sell、Heping Xiong

  DOI：10.1021/jo00121a036

  日期：1995.8

  A convenient, one-pot process for the synthesis of spiro delta- and gamma-lactones and alcohols from conjugated dienes mediated by Rieke magnesium is described. This technique involves the treatment of a substituted (2-butene-1,4-diyl)magnesium complex with an epoxide or ketone at -78 degrees C, followed by the addition of carbon dioxide at 0 degrees C to room temperature. After acidic hydrolysis and subsequent warming, a spiro delta- or gamma-lactone accommodating both a quaternary carbon center and vinyl moiety at the beta-position is afforded in good isolated yield. Alternatively, acidic hydrolysis of the initially formed adduct at 0 degrees C furnishes an alcohol containing a quaternary carbon center in good to excellent chemical yield.