(E)-1-chloro-3,5-dimethylhept-3-en-2-one

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: (E)-1-chloro-3,5-dimethylhept-3-en-2-one
• 化学式: C₉H₁₅ClO
• 分子量: 174.671
• InChiKey: NEVZSRPEAODYTR-VMPITWQZSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.1
• 重原子数：
  11
• 可旋转键数：
  4
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.67
• 拓扑面积：
  17.1
• 氢给体数：
  0
• 氢受体数：
  1

反应信息

• 作为产物：
  描述：

  2-甲基丁醛 在 2-苯基吡啶 、 manganese chloride bis(lithium chloride) 、 lithium 作用下， 以 四氢呋喃 为溶剂， 反应 5.5h， 生成 (E)-1-chloro-3,5-dimethylhept-3-en-2-one
  参考文献：
  名称：

  Sequential Reactions Promoted by Manganese:  Completely Stereoselective Synthesis of (E)-α,β-Unsaturated Amides, Ketones, Aldehydes, and Carboxylic Acids

  摘要：

  A complete E-selective synthesis of a,alpha,beta-unsaturated amides through a sequential reaction of a range of dichloroamides with a variety of aldehydes promoted by Rieke manganese (Mn*) is reported. A mechanism based on a sequential aldol-type reaction and a completely stereoselective beta-elimination is proposed to explain these results. The unsaturated amides obtained are readily and efficiently transformed into alpha,beta-unsaturated ketones, aldehydes, or carboxylic acids without loss of the diastereoisomeric purity of the C-C double bond.

  DOI：

  10.1021/jo701417z

文献信息

• Stereoselective Olefination Reactions Promoted by Rieke Manganese
  作者：José Concellón、Humberto Rodríguez-Solla、Vicente del Amo、Pamela Díaz

  DOI：10.1055/s-0029-1216880

  日期：2009.8

  applied to develop a novel and direct synthesis of (E)-α,β-unsaturated esters or amides and (Z)-α,β-unsaturated α-halo esters and α-choroamides through a Mn*-mediated sequential olefination protocol of aldehydes with dichloro esters or amides and trihalo esters or trichloroamides, respectively. manganese - elimination reactions - stereoselectivity - α,β-unsaturated esters - α,β-unsaturated amides - metalation

  提出了使用廉价的无毒金属锰进行立体选择性β-消除反应并促进醛的顺序烯化反应以获得α，β-不饱和酯和酰胺的优势的研究。使用活性锰（Mn *）作为金属化剂进行了各种消除反应，所有这些反应均具有完全的立体选择性和高收率的特征。锰的这种能力已被用于开发通过Mn *-直接合成（E）-α，β-不饱和酯或酰胺与（Z）-α，β-不饱和α-卤代酯和α-氯酰胺的新颖而直接的合成方法。介导的醛分别与二氯酯或酰胺和三卤代酯或三氯酰胺的顺序烯烃化方案。 锰-消除反应-立体选择性-α，β-不饱和酯-α，β-不饱和酰胺-金属化
• Sequential Reactions Promoted by Manganese:  Completely Stereoselective Synthesis of (<i>E</i>)-α,β-Unsaturated Amides, Ketones, Aldehydes, and Carboxylic Acids
  作者：José M. Concellón、Humberto Rodríguez-Solla、Pamela Díaz

  DOI：10.1021/jo701417z

  日期：2007.10.1

  A complete E-selective synthesis of a,alpha,beta-unsaturated amides through a sequential reaction of a range of dichloroamides with a variety of aldehydes promoted by Rieke manganese (Mn*) is reported. A mechanism based on a sequential aldol-type reaction and a completely stereoselective beta-elimination is proposed to explain these results. The unsaturated amides obtained are readily and efficiently transformed into alpha,beta-unsaturated ketones, aldehydes, or carboxylic acids without loss of the diastereoisomeric purity of the C-C double bond.