ethyl 3-(o-tolyl)butanoate | 1286204-31-6

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: ethyl 3-(o-tolyl)butanoate
• 英文别名: Ethyl 3-(2-methylphenyl)butanoate；ethyl 3-(2-methylphenyl)butanoate
• CAS: 1286204-31-6
• 化学式: C₁₃H₁₈O₂
• 分子量: 206.285
• InChiKey: BWQJVYUEVFSSMF-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.1
• 重原子数：
  15
• 可旋转键数：
  5
• 环数：
  1.0
• 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

• 作为反应物：
  描述：

  ethyl 3-(o-tolyl)butanoate 在 lithium aluminium tetrahydride 作用下， 以 乙醚 为溶剂， 反应 2.0h， 以3.36 g的产率得到3-(o-tolyl)butan-1-ol
  参考文献：
  名称：

  Enantioselective halogenative semi-pinacol rearrangement: a stereodivergent reaction on a racemic mixture

  摘要：

  利用双相卤代半频哪醇重排反应方案，已实现了一种高效、定量的消旋化策略，用于光学非活性的烯丙基环烷醇。生成的β-卤代螺酮，含有三个相邻的手性中心，通过常规硅胶柱层析可轻易回收，且具有高度的非对映异构和立体异构纯度。这些光学活性产物还可以进一步进行化学操作，获得合成上有趣的骨架，同时完全保留立体异构完整性。

  DOI：

  10.1039/c4cc05923a
• 作为产物：
  描述：

  3-(2-methylphenyl)butanoic acid 在 氯化亚砜 、 三乙胺 作用下， 以 二氯甲烷 为溶剂， 反应 3.0h， 生成 ethyl 3-(o-tolyl)butanoate
  参考文献：
  名称：

  Lipase catalysed kinetic resolutions of 3-aryl alkanoic acids

  摘要：

  Hydrolase catalysed kinetic resolutions leading to a series of 3-aryl alkanoic acids (>= 94% ee) are described. Hydrolysis of the ethyl esters with a series of hydrolases was undertaken to identify biocatalysts that yield the corresponding acids with excellent enantiopurity in each case. Steric and electronic effects on the efficiency and enantioselectivity of the biocatalytic transformation were also explored. (C) 2011 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tetasy.2010.12.019

文献信息

• Catalytic hydrogenation of α,β-unsaturated carboxylic acid derivatives using copper(<scp>i</scp>)/N-heterocyclic carbene complexes
  作者：Birte M. Zimmermann、Sarah C. K. Kobosil、Johannes F. Teichert

  DOI：10.1039/c8cc09853k

  日期：——

  air-stable copper(I)/N-heterocyclic carbene complex enables the catalytic hydrogenation of enoates and enamides, hitherto unreactive substrates employing homogeneous copper catalysis and H2 as a terminal reducing agent. This atom economic transformation replaces commonly employed hydrosilanes and can also be carried out in an asymmetric fashion.

  简单且空气稳定的铜（I）/ N-杂环卡宾络合物能够实现烯酸酯和烯酰胺的催化氢化，这是迄今为止使用均相铜催化和H 2作为末端还原剂的非反应性底物。这种原子经济的转变代替了常用的氢硅烷，并且也可以以不对称的方式进行。
• Versatile Biocatalytic C(<i>sp</i>³)−H Oxyfunctionalization for the Site‐ Selective and Stereodivergent Synthesis of α‐ and β‐Hydroxy Acids
  作者：Yingle Mao、Weijie Zhang、Zunyun Fu、Yanqiong Liu、Lin Chen、Xin Lian、Dan Zhuo、Jiewei Wu、Mingyue Zheng、Cangsong Liao

  DOI：10.1002/anie.202305250

  日期：2023.8.14

  α-ketoglutarate-dependent aryloxyalkanoate dioxygenases (AADs) are repurposed for applications in biocatalytic oxyfunctionalization. Activity profiling of natural AADs enabled the synthesis of four types of α-and β-hydroxy acids with broad scope, high efficiency, and good selectivity.

  在此，α-酮戊二酸依赖性芳氧基链烷酸双加氧酶（AAD）被重新用于生物催化氧功能化中的应用。天然 AAD 的活性分析使得四种类型的α-和β-羟基酸的合成具有广泛、高效和良好的选择性。
• Efficient one-pot synthesis of dihydroquinolinones in water at room temperature
  作者：Anna M. Linsenmeier、Wilfried M. Braje

  DOI：10.1016/j.tet.2015.07.016

  日期：2015.9

  A mild and robust one-pot protocol for the Rh-catalyzed 1,4-addition of 2-aminoboronic acid to alpha,beta-unsaturated esters for the efficient synthesis of dihydroquinolinones has been developed. Furthermore the addition of a variety of substituted boronic acids to diverse alpha,beta-unsaturated esters has been investigated. The reactions proceed in water containing catalytic amounts of the commercially available designer surfactant TPGS-750-M (via the formation of nanomicelles). This mild and easy to perform process proceeds at room temperature and tolerates a wide range of functionalities. (C) 2015 Elsevier Ltd. All rights reserved.
• Enantioselective halogenative semi-pinacol rearrangement: a stereodivergent reaction on a racemic mixture
  作者：Fedor Romanov-Michailidis、Marion Pupier、Laure Guénée、Alexandre Alexakis

  DOI：10.1039/c4cc05923a

  日期：——

  An efficient, quantitative deracemization strategy for optically inactive allylic cycloalkanols has been achieved using the biphasic halogenative semi-pinacol reaction protocol. The resultant β-halo spiroketones, containing three contiguous stereogenic centers, were easily recovered with high diastereomeric and enantiomeric purities following conventional silica gel chromatography. The optically active products could be further manipulated chemically, affording synthetically interesting scaffolds with complete preservation of stereoisomeric integrity.

  利用双相卤代半频哪醇重排反应方案，已实现了一种高效、定量的消旋化策略，用于光学非活性的烯丙基环烷醇。生成的β-卤代螺酮，含有三个相邻的手性中心，通过常规硅胶柱层析可轻易回收，且具有高度的非对映异构和立体异构纯度。这些光学活性产物还可以进一步进行化学操作，获得合成上有趣的骨架，同时完全保留立体异构完整性。
• Lipase catalysed kinetic resolutions of 3-aryl alkanoic acids
  作者：Rebecca E. Deasy、Maude Brossat、Thomas S. Moody、Anita R. Maguire

  DOI：10.1016/j.tetasy.2010.12.019

  日期：2011.1

  Hydrolase catalysed kinetic resolutions leading to a series of 3-aryl alkanoic acids (>= 94% ee) are described. Hydrolysis of the ethyl esters with a series of hydrolases was undertaken to identify biocatalysts that yield the corresponding acids with excellent enantiopurity in each case. Steric and electronic effects on the efficiency and enantioselectivity of the biocatalytic transformation were also explored. (C) 2011 Elsevier Ltd. All rights reserved.