3-(4-methoxyphenyl)-3-methylcyclopentan-1-one | 65564-93-4

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯酚醚
• 英文名称: 3-(4-methoxyphenyl)-3-methylcyclopentan-1-one
• 英文别名: 3-(4-methoxyphenyl)-3-methylcyclopentanone；3-Methyl-3-p-methoxyphenylcyclopentanon；3-methyl-3-(4-methoxy-phenyl)-cyclopentanone；3-(4-Methoxyphenyl)-3-methylcyclopentan-1-one
• CAS: 65564-93-4
• 化学式: C₁₃H₁₆O₂
• 分子量: 204.269
• InChiKey: HSXJEYWHIKJMOC-UHFFFAOYSA-N

物化性质

• 沸点：
  317.4±42.0 °C(Predicted)
• 密度：
  1.064±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.3
• 重原子数：
  15
• 可旋转键数：
  2
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.46
• 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：

  methyl 2-(4-methoxyphenyl)-2-methyl-5-oxocyclopentane-1-carboxylate 在 lithium chloride 作用下， 以 水 、 二甲基亚砜 为溶剂， 反应 16.0h， 以83%的产率得到3-(4-methoxyphenyl)-3-methylcyclopentan-1-one
  参考文献：
  名称：

  Stepwise approach for sterically hindered C_sp3–C_sp3 bond formation by dehydrogenative O-alkylation and Lewis acid-catalyzed [1,3]-rearrangement towards the arylalkylcyclopentane skeleton of sesquiterpenes

  摘要：

  开发了一种逐步脱氢交叉偶联方法，用于形成立体位阻的C_sp3–C_sp3键。

  DOI：

  10.1039/d0cc01017k

文献信息

• Efficient Formation of Benzylic Quaternary Centers via Palladium Catalysis
  作者：Aditya L. Gottumukkala、Jasmin Suljagic、Kiran Matcha、Johannes G. de Vries、Adriaan J. Minnaard

  DOI：10.1002/cssc.201300276

  日期：2013.9

  Four′s a crowd: An efficient protocol for the formation of benzylic quaternary centers via arylation of enones using a catalyst made from Pd(O2CCF3)2 and 2,2′‐bipyridine is developed. For cyclic substrates, catalyst loadings as low as 1 mol % Pd are enough to afford excellent yields (>90 %) using a variety of arylboronic acids. In case of acyclic substrates, the addition of KSbF6 was found to improve

  Four's人群：开发了一种有效的协议，该协议使用Pd（O 2 CCF 3）2和2,2'-联吡啶制成的催化剂通过烯酮的芳基化而形成苄基季中心。对于环状底物，使用多种芳基硼酸，低至1 mol％Pd的催化剂负载量足以提供出色的收率（> 90％）。在无环底物的情况下，发现添加KSbF 6可以提高转化率和产率。
• Enantioselective construction of <i>ortho</i>-substituted benzylic quaternary centers using a phenanthroline-Pd catalyst
  作者：Masafumi Tamura

  DOI：10.1039/d2ob01743a

  日期：——

  addition of ortho-substituted arylboronic acids to cyclic enones was developed. The addition of various ortho-substituted arylboronic acid to β-substituted cyclic enones, via catalysis with a chiral phenanthroline-Pd complex, formed cyclic ketone products bearing ortho-substituted benzylic all-carbon quaternary centers with good yields and high enantioselectivity.

  开发了一种 Pd 催化的邻位取代芳基硼酸与环烯酮的不对称共轭加成方法。将各种邻位取代的芳基硼酸加成到β-取代的环烯酮上，通过手性菲咯啉-Pd配合物的催化，形成带有邻位取代的苄基全碳季中心的环酮产物，具有良好的产率和高对映选择性。
• Wacker Oxidation of Methylenecyclobutanes: Scope and Selectivity in an Unusual Setting
  作者：Jan Sietmann、Marius Tenberge、Johannes M. Wahl

  DOI：10.1002/anie.202215381

  日期：2023.2.6

  Methylenecyclobutanes undergo Wacker oxidation towards cyclopentanones under mild reaction conditions. A semi-pinacol-type rearrangement is proposed to be responsible for the intermediary 1,2-shift, which not only explains the formation of the products, but also rationalizes the reaction outcomes in terms of site-, regio- and enantioselectivity.

  亚甲基环丁烷在温和的反应条件下经过瓦克氧化生成环戊酮。提出半频哪醇型重排负责中间 1,2-转移，这不仅解释了产物的形成，而且还使反应结果在位点、区域和对映选择性方面合理化。
• Catalytic and Regioselective Ring Expansion of Arylcyclobutanones with Trimethylsilyldiazomethane. Ligand-Dependent Entry to β-Ketosilane or Enolsilane Adducts
  作者：Jennifer A. Dabrowski、David C. Moebius、Andrew J. Wommack、Anne F. Kornahrens、Jason S. Kingsbury

  DOI：10.1021/ol101136a

  日期：2010.8.20

  Divergent reactivity is uncovered in the homologation of arylcyclobutanones with trimethylsilyldiazomethane. With Sc(OTf)(3) as catalyst, enolsilanes are obtained with a high preference for methylene migration. By contrast, Sc(hfac)(3) gives beta-ketosilanes with both regio- and diastereocontrol. Each adduct affords the cyclopentanone upon hydrolysis.
• A directing effect of neighboring aromatic groups on the regiochemistry of formation and stereochemistry of alkylation and bromination of ketone lithium enolates. Evidence for lithium-arene coordination and dramatic effect of copper(I) in controlling stereochemistry and limiting polyalkylation
  作者：Gary H. Posner、Carl M. Lentz

  DOI：10.1021/ja00498a023

  日期：1979.2