(E)-4-methoxy-N-(4-nitrobenzylidene)aniline | 39963-93-4

• 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: (E)-4-methoxy-N-(4-nitrobenzylidene)aniline
• 英文别名: (E)-N-(4-methoxyphenyl)-1-(4-nitrophenyl)methanimine；(E)-4-methoxy-N-(4-nitrobenzylidene)phenylamine；(E)-N-(4-nitrobenzylidene)-4-methoxybenzenamine；4-methoxyphenyl-4-nitrobenzylideneamine；N-(4-nitrobenzylidene)-4-methoxyaniline；N-4-methoxyphenyl-4-nitro-benzaldimine
• CAS: 39963-93-4
• 化学式: C₁₄H₁₂N₂O₃
• 分子量: 256.261
• InChiKey: PCMMEMLVVTUFTM-XNTDXEJSSA-N

物化性质

• 熔点：
  134-135 °C
• 沸点：
  432.1±30.0 °C(Predicted)
• 密度：
  1.18±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  3.35
• 重原子数：
  19.0
• 可旋转键数：
  4.0
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.07
• 拓扑面积：
  64.73
• 氢给体数：
  0.0
• 氢受体数：
  4.0

反应信息

• 作为反应物：
  描述：

  (E)-4-methoxy-N-(4-nitrobenzylidene)aniline 在 ytterbium(III) triflate potassium carbonate 作用下， 以 四氢呋喃 、 水 、 乙腈 为溶剂， 生成 6-Methoxy-1,3,3-trimethyl-2-(4-nitrophenyl)-2,4-dihydroquinolin-4-ol
  参考文献：
  名称：

  [1]Benzopyrano[4,3-d][1,3]benzooxazocin-13-one及其衍生物的合成与表征

  摘要：

  这项工作描述了衍生自苯并吡喃 [4,3-d][1,3] benzooxazocin-13-one 的官能化裂隙分子 6、6a、16、16a、17、19 和 20 的有效合成。化合物6a和16a的X射线晶体结构分析表明，苯并吡喃部分和对甲氧基苯环的平面裂角分别为109.4°和108.6°。16、16a和20桥头芳环的构象受到环中C-9位上的勐二甲基和环中氮原子上的甲基的限制。

  DOI：

  10.1055/s-2006-950267
• 作为产物：
  描述：

  p-nitrophenylcarboxaldehyde N-(p-methoxyphenyl)imine 以 苯 为溶剂， 生成 (E)-4-methoxy-N-(4-nitrobenzylidene)aniline
  参考文献：
  名称：

  Mechanism of thermal Z/E isomerization of substituted N-benzylideneanilines. Nature of the activated complex with an sp-hybridized nitrogen atom

  摘要：

  In order to study the mechanism of thermal geometrical isomerization involving a sp2-hybridized nitrogen atom, kinetic effects of substituent, solvent, and pressure were studied in substituted N-benzylideneanilines. The effect of the substituent on the aniline moiety was almost independent of the electronic nature of the benzylidene group, and the results could be described satisfactorily by log (k/k(o)) = rho[sigma-degrees + r+(sigma+-sigma-degrees)+ r-(sigma--sigma-degrees)], except for the 4-(dimethylamino) group. The r- values were more than twice as large as r+, suggesting strongly that the aniline ring is in conjugation not with the carbon-nitrogen pi bond but with the nitrogen lone pair in the transition state. The lower activation enthalpies and fairly large negative activation entropies observed in N-(4-X-benzylidene)4-nitroanilines also support this view. When a dimethylamino group exists in the 4-position of the aniline ring, the rate constants observed were larger than that expected from the above equation. This deviation suggests the existence of a reaction route where the two phenyl groups become coplanar in the transition state. Ab initio calculations on selected N-phenylformaldimines and N-benzylideneanilines were performed to characterize the actual relation between both reaction possibilities as alternative and parallel routes, respectively. On the basis of the experimental data, the rate constants for the two inversion isomerizations were estimated by assuming parallel reactions for three cases.

  DOI：

  10.1021/jo00068a042

文献信息

• Improving C=N Bond Reductions with (Cyclopentadienone)iron Complexes: Scope and Limitations
  作者：Mattia Cettolin、Xishan Bai、Dennis Lübken、Marco Gatti、Sofia Vailati Facchini、Umberto Piarulli、Luca Pignataro、Cesare Gennari

  DOI：10.1002/ejoc.201801348

  日期：2019.1.31

  The catalytic transfer hydrogenation of imines and the reductive amination of carbonyl compounds have been thoroughly investigated with a cyclooctene‐derived (cyclopentadienone)iron pre‐catalyst. Additionally, enantioselective ketimine reduction with a chiral (cyclopentadienone)iron complex is reported here for the first time.

  亚胺的催化转移加氢和羰基化合物的还原胺化已用环辛烯衍生的（环戊二烯酮）铁预催化剂进行了深入研究。另外，这里首次报道了用手性（环戊二烯酮）铁配合物对映选择性酮亚胺的还原。
• Organocatalytic Aziridine Synthesis Using F⁺ Salts
  作者：Sean P. Bew、Shirley A. Fairhurst、David L. Hughes、Laurent Legentil、John Liddle、Paolo Pesce、Sanket Nigudkar、Martin A. Wilson

  DOI：10.1021/ol901784m

  日期：2009.10.15

  This paper describes a unique application of the fluoronium cation (F+) as an organocatalyst for mediating the reaction between N-substituted imines and ethyl diazoacetate affording excellent yields of N-substituted aziridines.

  本文介绍了氟阳离子（F +）作为有机催化剂在N-取代的亚胺与重氮乙酸乙酯之间的介导的独特应用，提供了N-取代的氮丙啶的优异收率。
• SULFONAMIDE-BASED ORGANOCATALYSTS AND METHOD FOR THEIR USE
  申请人：Carter Rich Garrett

  公开号：US20100184986A1

  公开（公告）日：2010-07-22

  Organocatalysts, particularly proline sulfonamide organocatalysts, having a first general formula as follows are disclosed. Embodiments of a method for using these organocatalysts also are disclosed. The method comprises providing a disclosed organocatalyst, and performing a reaction, often an enantioselective or diastereoselective reaction, using the organocatalyst. Solely by way of example, disclosed catalysts can be used to perform aldol reactions, conjugate additions, Michael additions, Robinson annulations, Mannich reactions, α-aminooxylations, α-hydroxyaminations, α-aminations and alkylation reactions. Certain of such reactions are intramolecular cyclizations used to form cyclic compounds, such as 5- or 6-membered rings, having one or more chiral centers. Disclosed organocatalysts generally are much more soluble in typical solvents used for organic synthesis than are known compounds. Moreover, the reaction yield is generally quite good with disclosed compounds, as is their enantioselective and diastereoselective effectiveness.

  披露了具有如下一般公式之一的有机催化剂，尤其是脯氨酸磺酰胺有机催化剂。还披露了使用这些有机催化剂的方法的实施例。该方法包括提供一种披露的有机催化剂，并使用该有机催化剂进行反应，通常是立体选择性的反应或对映选择性反应。仅作为示例，披露的催化剂可用于进行aldol反应、共轭加成、Michael加成、Robinson环化反应、Mannich反应、α-氨基氧化、α-羟基胺化、α-胺化和烷基化反应。其中一些反应是分子内环化反应，用于形成具有一个或多个手性中心的环状化合物，例如5或6元环。披露的有机催化剂通常比已知的化合物更容易溶于用于有机合成的典型溶剂中。此外，使用披露化合物的反应收率通常相当好，它们的对映选择性和非对映选择性效果也很好。
• Origin of the Relative Stereoselectivity of the β-Lactam Formation in the Staudinger Reaction
  作者：Lei Jiao、Yong Liang、Jiaxi Xu

  DOI：10.1021/ja056711k

  日期：2006.5.1

  stereoselectivity of the beta-lactam formation is one of the critical issues in the Staudinger reaction. Although many attempts have been made to explain and to predict the stereochemical outcomes, the origin of the stereoselectivity remains obscure. We are proposing a model that explains the relative stereoselectivity based on a kinetic analysis of the cis/trans ratios of reaction products. The results were

  β-内酰胺形成的相对（顺式、反式）立体选择性是施陶丁格反应中的关键问题之一。尽管已经进行了许多尝试来解释和预测立体化学结果，但立体选择性的起源仍然模糊不清。我们提出了一个模型，该模型基于对反应产物的顺式/反式比率的动力学分析来解释相对立体选择性。结果来自详细的哈米特分析。环亚胺被用来研究烯酮取代基的电子效应，发现立体选择性不能简单地归因于扭矩电子模型。基于我们的结果，相对立体选择性的起源可以描述如下：(1) 立体选择性是两性中间体中亚胺部分的直接闭环和异构化之间竞争的结果；(2) 闭环步骤很可能是烯醇化物与亚胺部分的分子内亲核加成，这显然受烯酮和亚胺取代基的电子效应影响；(3) 给电子烯酮取代基和吸电子亚胺取代基加速直接闭环，导致优先形成顺-β-内酰胺，而吸电子烯酮取代基和吸电子亚胺取代基减慢直接闭环，导致偏好形成反式β-内酰胺；
• Ruthenium N‐Heterocyclic Carbene Complexes for Chemoselective Reduction of Imines and Reductive Amination of Aldehydes and Ketones
  作者：Lakshay Kathuria、Ashoka G. Samuelson

  DOI：10.1002/ejic.202000069

  日期：2020.6.30

  Chemoselective reduction of imines to secondary amines is catalyzed efficiently by tethered and untethered, half‐sandwich ruthenium N‐heterocyclic carbene (NHC) complexes at room temperature. The untethered Ru‐NHC complexes are more efficient as catalysts for the reduction of aldimines and ketimines than the tethered complexes. Using the best untethered complex as a catalyst, electronic and steric

  在室温下，通过束缚和不束缚的半三明治钌N-杂环卡宾（NHC）络合物可有效催化亚胺化学选择性还原为仲胺。未束缚的Ru-NHC络合物比束缚的络合物作为减少醛亚胺和酮亚胺的催化剂更有效。使用最好的无束缚配合物作为催化剂，使用一系列亚胺探讨了对反应的电子和空间要求。通过以多种方式进行分子间和分子内竞争反应，测试了催化剂对亚胺还原的化学选择性。该催化剂在厌氧条件下具有很高的TON和TOF。