Methyl-2-diacetylcyclopentan | 28239-17-0

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: Methyl-2-diacetylcyclopentan
• 英文别名: 1-(1-Acetyl-2-methylcyclopentyl)ethanone
• CAS: 28239-17-0
• 化学式: C₁₀H₁₆O₂
• 分子量: 168.236
• InChiKey: ZKBLOPUFHUVSHW-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.7
• 重原子数：
  12
• 可旋转键数：
  2
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.8
• 拓扑面积：
  34.1
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为产物：
  描述：

  3-pent-4-enyl-pentane-2,4-dione 生成 Methyl-2-diacetylcyclopentan
  参考文献：
  名称：

  Leyendecker,F. et al., Bulletin de la Societe Chimique de France, 1970, p. 549 - 555

  摘要：

  DOI：

文献信息

• Perkin–Markovnikov Type Reaction Initiated with Electrogenerated Superoxide Ion
  作者：Fumihiro Ojima、Tetsuo Osa

  DOI：10.1246/bcsj.62.3187

  日期：1989.10

  The cyclic condensation of active methylene compounds such as diethyl malonate, dimethyl malonate, ethyl acetoacetate, or acetylacetone and dibromoalkanes such as 1,2-dibromoethane, 1,3-dibromopropane, 1,4-dibromobutane, 1,5-dibromopentane, 1,6-dibromohexane, 1,3-dibromobutane, or 1,4-dibromopentane with electrogenerated superoxide ion was studied electrochemically in N,N-dimethylformamide (DMF) using cyclic voltammetry (CV) and controlled potential macro-electrolysis. The CV shows that electrogenerated superoxide ion reacts with both active methylene compounds and dibromoalkanes in the dissolved oxygen medium. Controlled potential macro-electrolysis of the above components generally yielded cycloalkanes as the main products. In comparison, the chemical method using sodium ethoxide was also carried out. Two reaction mechanisms via the proton abstraction of active methylene compounds with electrogenerated superoxide ion and via the nucleophilic attack of the superoxide ion on dibromoalkanes are presented.

  活性亚甲基化合物，如二乙基马来酸酯、二甲基马来酸酯、乙酰乙酸乙酯或乙酰乙酮，与二溴烷烃，如1,2-二溴乙烷、1,3-二溴丙烷、1,4-二溴丁烷、1,5-二溴戊烷、1,6-二溴己烷、1,3-二溴丁烷或1,4-二溴戊烷的循环缩合反应，采用循环伏安法（CV）和控制电位宏电解法在N,N-二甲基甲酰胺（DMF）中进行了电化学研究。CV结果表明，电生超氧阴离子在溶解氧介质中与活性亚甲基化合物和二溴烷烃均发生反应。上述组分的控制电位宏电解通常以环烷烃作为主要产物。相比之下，使用乙醇钠的化学方法也进行了研究。提出了两种反应机理：一种是活性亚甲基化合物与电生超氧阴离子的质子抽取反应，另一种是超氧阴离子对二溴烷烃的亲核攻击反应。