(2R)-2-((R)-hydroxy(4-nitrophenyl)methyl)cyclopentan-1-one | 349628-52-0

• 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: (2R)-2-((R)-hydroxy(4-nitrophenyl)methyl)cyclopentan-1-one
• 英文别名: 2-[hydroxy(4-nitrophenyl)methyl]cyclopentanone；2-(hydroxy(4-nitrophenyl)methyl)cyclopentan-1-one；(R)-2-((R)-hydroxy(4-nitrophenyl)methyl)cyclopentanone；(R)-2-((R)-hydroxy(4-nitrophenyl)methyl)cyclopentan-1-one；(2R)-2-[(R)-hydroxy(4-nitrophenyl)methyl]cyclopentanone；Cyclopentanone, 2-[(R)-hydroxy(4-nitrophenyl)methyl]-, (2R)-；(2R)-2-[(R)-hydroxy-(4-nitrophenyl)methyl]cyclopentan-1-one
• CAS: 349628-52-0
• 化学式: C₁₂H₁₃NO₄
• 分子量: 235.24
• InChiKey: CIYBYDAJXJZQNN-JQWIXIFHSA-N

物化性质

• 沸点：
  435.2±25.0 °C(Predicted)
• 密度：
  1.354±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  1.7
• 重原子数：
  17
• 可旋转键数：
  2
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.42
• 拓扑面积：
  83.1
• 氢给体数：
  1
• 氢受体数：
  4

反应信息

• 作为产物：
  描述：

  对硝基苯甲醛 、 环戊酮 在 (1R,2R)-N¹,N¹-dicyclopentylcyclohexane-1,2-diamine 、 四丁基溴化铵 、 三氟乙酸 作用下， 以 水 为溶剂， 反应 72.08h， 以87%的产率得到(2R)-2-((R)-hydroxy(4-nitrophenyl)methyl)cyclopentan-1-one
  参考文献：
  名称：

  Highly stereoselective anti-aldol reactions catalyzed by simple chiral diamines and their unique application in configuration switch of aldol products

  摘要：

  Chiral derivatives of trans-1,2-diaminocyclohexane with different N,N-dialkyl groups in well-defined orientations have been synthesized, and applied as catalysts for the asymmetric aldol reaction between a variety of aldehydes and ketones. Enantiomeric catalyst 1j catalyzed the reaction in ethanol and provided excellent diastereoselectivity and enantioselectivity. Significantly, simple replacement of organic solvents with water switched the products of the aldol reactions from anti to syn configuration. Such catalytic reactions led to the products with anti to syn diastereoselectivity up to 99:1 in ethanol, while in water gave the products with syn to anti diastereoselectivity up to 99:1. (C) 2013 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tetlet.2013.09.053

文献信息

• L-proline derivatives based on a calix[4]arene scaffold as chiral organocatalysts for the direct asymmetric aldol reaction in water
  作者：Mehmet Aktas、Arzu Uyanik、Serkan Eymur、Mustafa Yilmaz

  DOI：10.1080/10610278.2015.1073288

  日期：2016.6.2

  water-compatible proline catalysts (4–6) derived from calixarene bearing a hydrophobic nature have been synthesised. It was found that the compound 4 was a highly efficient organocatalyst for aldol reactions occurred in the water. Under optimised reaction conditions, high yields (up to 82%), good enantioselectivities (ee up to 81%) and high diastereoselectivities (dr up to 91:9) were obtained.

  摘要 已经合成了一系列新的水相容脯氨酸催化剂 (4-6)，这些催化剂源自具有疏水性的杯芳烃。发现化合物4是在水中发生的羟醛反应的高效有机催化剂。在优化的反应条件下，获得了高产率（高达 82%）、良好的对映选择性（ee 高达 81%）和高非对映选择性（dr 高达 91:9）。
• L-proline/cholesterol and diosgenin based thiourea cooperative system for the direct asymmetric aldol reaction in the presence of water
  作者：Serkan EYMUR、Enis TAŞCI、Arzu UYANIK、Mustafa YILMAZ

  DOI：10.3906/kim-2003-36

  日期：——

  successfully used as a cocatalyst for L-proline catalyzed aldol reactions in the presence of water. The anticonfigured products were obtained with good yields (up to 94%), high diastereoselectivities (up to 95:5), and high enantiomeric excesses (up to 93% ee ). The successful results for catalytic efficiency of L-proline in the presence of water reveal the importance of the hydrophobic nature of cholesterol

  合成了一系列胆固醇和基于疏水性的尿素和硫脲化合物，并成功地将其作为水存在下L-脯氨酸催化的羟醛反应的助催化剂。获得抗构型产物，具有良好的产率（高达94％），高的非对映选择性（高达95∶5）和高的对映体过量（高达93％ee）。L-脯氨酸在水存在下催化效率的成功结果表明，胆固醇和硫脲的薯os皂苷元部分的疏水性对在水存在下的反应性和选择性至关重要。
• <i>N</i>-Primary-Amine-Terminal β-Turn Tetrapeptides as Organocatalysts for Highly Enantioselective Aldol Reaction
  作者：Feng-Chun Wu、Chao-Shan Da、Zhi-Xue Du、Qi-Peng Guo、Wei-Ping Li、Lei Yi、Ya-Ning Jia、Xiao Ma

  DOI：10.1021/jo9005766

  日期：2009.7.3

  solution. They were first applied to catalyze aldol reactions, and were found to be effective catalysts for the transformations. The tetrapeptide Val-d-Pro-Gly-Leu-OH (1g) was the optimal organocatalyst. It was shown that the intensive β-turn conformation, indicated by CD and NOESY spectra, contributed to the (R)-aldol and high enantioselectivity of the reaction of acetone in MeOH, whereas the sharply varied

  设计并合成了四肽，该四肽包含一个终止的伯胺和构象受限的d -Pro-Gly或d -Pro-Aib（2-氨基异丁酸）链段作为强β-转核元素，并通过N-模块二肽与溶液中的C模块二肽。它们首先被用于催化羟醛反应，并被发现是有效的转化催化剂。四肽Val- d -Pro-Gly-Leu-OH（1g）是最佳的有机催化剂。结果表明，在密集的β转角构象，通过CD和NOESY光谱表明，促成了（ř）-丙酮中的丙酮反应具有较高的对映选择性，而急剧变化的构象应有助于1,2-二氯乙烷（DCE）中反应的低对映选择性和（S）产物。羟基丙酮反应中的不对称诱导不受溶剂的影响，在MeCN中添加1克添加剂（S）-BINOL可达到主要的反产物。
• Direct Asymmetric Aldol Reaction Catalyzed by C2-Symmetrical Chiral Primary Amine Organocatalysts
  作者：Gong-Jian Zhu、Chao-Shan Da、Ya-Ning Jia、Xiao Ma、Lei Yi

  DOI：10.2174/157017810790533904

  日期：2010.1.1

  C-2-symmetrical chiral primary amines were synthesized from chiral BINOL and diamines. Then their catalytic activities in the asymmetric aldol reactions were evaluated, and the result indicated that 1c was the optimal organocatalyst. The reaction of a variety of aromatic aldehydes with aliphatic ketones, catalyzed by 20 mol % 1c in the addition of benzoic acid in carbon tetrachloride, afforded the aldol products

  从手性 BINOL 和二胺合成了三种新型 C-2 对称手性伯胺。然后评估了它们在不对称醛醇反应中的催化活性，结果表明1c是最佳的有机催化剂。在四氯化碳中加入苯甲酸，在 20 mol % 1c 的催化下，多种芳香醛与脂肪族酮反应得到高产率（高达 92%）和良好的对映选择性（高达 71%）的醛醇产物.
• Pyrimidine-Derived Prolinamides as Recoverable Bifunctional Organocatalysts for Enantioselective Inter- and Intramolecular Aldol Reactions under Solvent-Free Conditions
  作者：Pascuala Vizcaíno-Milla、José M. Sansano、Carmen Nájera、Béla Fiser、Enrique Gómez-Bengoa

  DOI：10.1002/ejoc.201500007

  日期：2015.4

  Chiral L-prolinamides 2 containing the (R,R)- and (S,S)-trans-cyclohexane-1,2-diamine scaffold and a 2-pyrimidinyl unit are synthesized and used as general organocatalysts for intermolecular and intramolecular aldol reactions with 1,6-hexanedioic acid as a co-catalyst under solvent-free conditions. The intermolecular reaction between ketone–aldehyde and aldehyde–aldehyde must be performed under wet

  合成了含有 (R,R)- 和 (S,S)-反式-环己烷-1,2-二胺支架和 2-嘧啶基单元的手性 L-脯氨酰胺 2 并用作分子间和分子内羟醛反应的通用有机催化剂1,6-己二酸作为无溶剂条件下的助催化剂。酮-醛和醛-醛之间的分子间反应必须在湿条件下使用催化剂 (S,S)-2b 在 10 °C 下进行，这提供了具有高区域选择性、非对映选择性和对映选择性的抗醛醇。对于 Hajos-Parrish-Eder-Sauer-Wiechert 反应，催化剂 2 的两种非对映异构体在室温下无水条件下给出相似的结果，得到相应的 Wieland-Miescher 酮和衍生物。两种类型的反应均按比例放大至 1 g，有机催化剂通过萃取后处理回收并重复使用，而没有任何明显的活性损失。DFT 计算通过提供催化剂 2a 和 2b 发生的 H 键网络的计算比较来支持分子间过程的立体化学结果和有机催化剂发挥的双功能作用。