methyl 3-(1-methoxycarbonyl-2-oxocyclopent-1-yl)propionate | 125113-57-7

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 脂肪酰基
• 英文名称: methyl 3-(1-methoxycarbonyl-2-oxocyclopent-1-yl)propionate
• 英文别名: Methyl 1-(3-methoxy-3-oxopropyl)-2-oxocyclopentane-1-carboxylate
• CAS: 125113-57-7
• 化学式: C₁₁H₁₆O₅
• 分子量: 228.245
• InChiKey: MQHKDKXKZDSRNI-UHFFFAOYSA-N

物化性质

• 沸点：
  305.2±27.0 °C(Predicted)
• 密度：
  1.168±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  0.5
• 重原子数：
  16
• 可旋转键数：
  6
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.73
• 拓扑面积：
  69.7
• 氢给体数：
  0
• 氢受体数：
  5

反应信息

• 作为反应物：
  描述：

  methyl 3-(1-methoxycarbonyl-2-oxocyclopent-1-yl)propionate 在 溴 作用下， 以 氯仿 为溶剂， 反应 1.0h， 以93%的产率得到methyl 3-(3-bromo-1-methoxycarbonyl-2-oxocyclopent-1-yl)propionate
  参考文献：
  名称：

  Syntheses of the terpenoid precursors cyclopent-2-enone and cyclohex-2-enone diesters

  摘要：

  Two reaction pathways were elaborated for the practical and convenient synthesis of the title compounds: The first route applies a bromination-dehydrobromination sequence to introduce the double bond into 1-alkoxycarbonyl-2-oxocycloalkylacetic and propionic esters (4a-c, 7a,b). The application of 2,6-lutidine for dehydrobromination of alpha-bromocycloalkanones diesters (5a-c, 8a, b) provides sufficient selectivity to carry out this step without affecting the sensitive ester group. Alternative pathways, involving Michael reaction of diethyl 2-acetylsuccinate or -glutarate with acrolein and subsequent intramolecular aldol condensation, are presented in the case of cyclohex-2-enone derivatives 2a, b.

  DOI：

  10.1007/bf00811764
• 作为产物：
  描述：

  methyl 1-(2-cyanoethyl)-2-oxocyclopentanecarboxylate 在 potassium tert-butylate 作用下， 以 二甲基亚砜 为溶剂， 反应 3.0h， 生成 methyl 3-(1-methoxycarbonyl-2-oxocyclopent-1-yl)propionate
  参考文献：
  名称：

  Xie, Zhuo-Feng; Suemune, Hiroshi; Sakai, Kiyoshi, Synthetic Communications, 1989, vol. 19, # 5and6, p. 987 - 992

  摘要：

  DOI：

文献信息

• Merrifield Resin−C₆H₄CH₂N₃P(MeNCH₂CH₂)₃N:  An Efficient Reusable Catalyst for Room-Temperature 1,4-Addition Reactions and a More Convenient Synthesis of Its Precursor P(MeNCH₂CH₂)₃N
  作者：Reddy、John G. Verkade

  DOI：10.1021/jo062505z

  日期：2007.4.1

  donors were efficiently catalyzed at room temperature by the title reusable Merrifield resin-supported catalyst. Advantages of this catalyst include a simple workup (filtration of the reaction mixture) and good to excellent product yields. We also report a substantially simplified synthesis of the commercially available strong nonionic base 1, a precursor to the title polymer-bound catalyst.

  室温下，标题为可重复使用的Merrifield树脂负载的催化剂可有效地催化1,4-加成物中具有多种供体的多种Michael受体。该催化剂的优点包括简单的后处理（反应混合物的过滤）和良好至极好的产物产率。我们还报告了商业上可获得的强非离子碱1的大幅简化合成，该碱是标题聚合物结合的催化剂的前体。
• N-Heterocyclic Carbene-Catalyzed Michael Additions of 1,3-Dicarbonyl Compounds
  作者：Thomas Boddaert、Yoann Coquerel、Jean Rodriguez

  DOI：10.1002/chem.201002538

  日期：2011.2.11

  A study of the organocatalytic activity of N‐heterocyclic carbenes (NHCs) in the Michael addition of 1,3‐dicarbonyl compounds has allowed us to identify 1,3‐bis(2,6‐diisopropylphenyl)imidazol‐2‐ylidene (IPr) as an excellent catalyst for this transformation (up to 99 % yield with a 2.5 mol % catalyst loading), and the reaction was found to be of broad scope. Two early applications of this unprecedented

  对N-杂环卡宾（NHCs）在1,3-二羰基化合物的迈克尔加成反应中的有机催化活性的研究使我们能够鉴定出1,3-双（2,6-二异丙基苯基）咪唑-2-亚烷基（IPr）作为用于该转化的极好的催化剂（在2.5mol％的催化剂负载下产率高达99％），发现该反应具有广泛的范围。描述了这种NHC前所未有的催化活性的两个早期应用，即简单的环状1,3-二羰基和丙二酸衍生物的多米诺碳环化反应，它们允许立体选择进入桥接的双环化合物，以及立体选择性合成环己醇（或环己烯）。还报道了早期的机械研究。
• Development of new DMAP-related organocatalysts for use in the Michael addition reaction of β-ketoesters in water
  作者：Kyungmin Ko、Keiji Nakano、Shigeru Watanabe、Yoshiyasu Ichikawa、Hiyoshizo Kotsuki

  DOI：10.1016/j.tetlet.2009.04.025

  日期：2009.7

  A general and efficient protocol for the Michael addition reactions of β-ketoesters in pure water has been developed. The reactions are successfully catalyzed by newly designed DMAP-related organocatalysts such as 4-(didecylamino)pyridine, and the desired Michael adducts are obtained in good to high yields

  已经开发出一种在纯水中进行β-酮酸酯的迈克尔加成反应的通用有效方案。通过新设计的DMAP相关有机催化剂（例如4-（十二烷基氨基）吡啶）成功催化了反应，并以高收率或高收率获得了所需的迈克尔加合物
• Bifunctional nickel precatalysts of amido-functionalized N-heterocyclic carbenes for base-free Michael reaction under ambient conditions
  作者：Sachin Kumar、Anantha Narayanan、Mitta Nageswar Rao、Mobin M. Shaikh、Prasenjit Ghosh

  DOI：10.1016/j.jorganchem.2011.09.007

  日期：2012.1

  bifunctional nickel precatalysts, [1-(R)-3-N-(benzylacetamido)imidazol-2-ylidene]2 Ni [R = Me (1b), i-Pr (2b), and CH2Ph (3b)], containing a Lewis acidic metal site and a Lewis basic amido-N site in a pendent ligand sidearm, have been successfully designed for base-free Michael addition reaction. Specifically, the nickel (1–3)b complexes catalyzed the highly desired base-free Michael addition reactions

  一系列新的双功能镍预催化剂[1-（R）-3- N-（苄基乙酰胺基）咪唑-2-基] 2 Ni [R = Me（1b），i -Pr（2b）和CH 2 Ph（3b）]已经成功地设计了用于悬空的配体侧臂中的路易斯酸性金属位点和路易斯碱性酰胺基-N位点的无碱迈克尔加成反应。具体地，镍（1 - 3）b该配合物在环境温度下，在空气中以很高的收率催化了非常需要的代表性环状5元β-二羰基和β-酮酯底物与各种活化的烯烃化合物的无碱迈克尔加成反应。镍（1-3）b配合物是由相应的咪唑鎓氯化物盐（1-3）a与NiCl 2 •6H 2 O在K 2 CO 3为碱的情况下以55-73％的反应合成的屈服。对镍配合物进行的密度泛函理论（DFT）研究表明，在这些配合物中存在强的Ni–NHCσ相互作用。
• N-Heterocyclic Carbene Catalyzed Carba-, Sulfa-, and Phospha-Michael Additions with NHC·CO₂ Adducts as Precatalysts
  作者：Morgan Hans、Lionel Delaude、Jean Rodriguez、Yoann Coquerel

  DOI：10.1021/jo500108a

  日期：2014.3.21

  N-heterocyclic carbene catalyzed Michael additions have been revisited with 1,3-dialkyl- or 1,3-diarylimidazol(in)ium-2-carboxylates, that is, NHC center dot CO2 adducts, as the source of the free NHC catalysts in solution. Using these precatalysts, a number of efficient carba-, sulfa-, and phospha-Michael additions were achieved very conveniently, without the need for an external strong base to generate the NHC by deprotonation of an azolium salt. To further expand the scope of the procedure, some NHC-catalyzed sulfa-Michael/aldol organocascades were also investigated.