N-(3-methylbenzylidene)aniline oxide | 62500-20-3

• 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: N-(3-methylbenzylidene)aniline oxide
• 英文别名: (3-Methylphenyl)-N-phenylmethanimine N-oxide；1-(3-methylphenyl)-N-phenylmethanimine oxide
• CAS: 62500-20-3
• 化学式: C₁₄H₁₃NO
• 分子量: 211.263
• InChiKey: HUCAPSVOZRCRQH-UHFFFAOYSA-N

物化性质

• 熔点：
  83-85 °C
• 沸点：
  375.1±35.0 °C(Predicted)
• 密度：
  1.117±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.4
• 重原子数：
  16
• 可旋转键数：
  2
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.07
• 拓扑面积：
  28.8
• 氢给体数：
  0
• 氢受体数：
  1

反应信息

• 作为反应物：
  描述：

  N-(3-methylbenzylidene)aniline oxide 在 三氟化硼乙醚 、 对甲苯磺酸 作用下， 以 二氯甲烷 为溶剂， 反应 1.5h， 生成 1-(ethoxy(m-tolyl)methyl)-1H-benz[d]imidazol-2(3H)-one
  参考文献：
  名称：

  通过二乙酰氧基碘苯促进的羟胺，醛和三甲基甲硅烷基氰化物的一锅反应合成苯并咪唑酮

  摘要：

  描述了在BF 3 ·Et 2 O的存在下新型有效的由PhI（OAc）2促进的芳族羟胺，醛和TMCSN的单锅反应。在温和的反应条件下以令人满意的产率获得了多种N-取代的苯并咪唑酮。事实证明，该方法对于从容易获得的起始原料合成苯并咪唑酮衍生物是有效的。

  DOI：

  10.1021/acs.joc.6b02781
• 作为产物：
  描述：

  硝基苯 在 氯化铵 、 锌 作用下， 以 水 为溶剂， 生成 N-(3-methylbenzylidene)aniline oxide
  参考文献：
  名称：

  Synthesis and evaluation of hexahydropyrrolo[3,4-d]isoxazole-4,6-diones as anti-stress agents

  摘要：

  A series of 2,3-diphenyl-5-(naphthalen-1-yl)-4H-2,3,3a,5,6,6a-hexahydropyrrolo[3,4-d]isoxazole-4,6-dione derivatives were synthesized via 1,3-dipolar cycloaddition of azomethine N-oxides with N-(alpha-naphthyl)maleimide. The pyrrolo-isoxazole derivatives were assigned cis- and trans- configurations (3-A and 3-B) with respect to proton C-3-H on azomethinic carbon on the basis of their H-1 NMR. The reaction proceeds through cis- endo addition rule indicating the predominance of cis isomer. The cis- and trans-isomers of a prototype compound 3a i.e., compound 3a-A and compound 3a-B were evaluated for anti-stress activity in immobilization-induced acute stress. Compound 3a-A (5 and 10 mg/kg) and compound 3a-B (10 mg/kg) attenuated immobilization stress-induced behavioral alterations in Swiss albino mice suggesting that pyrrolo-isoxazole may serve as lead molecule for the development of anti-stress agents. (C) 2011 Elsevier Masson SAS. All rights reserved.

  DOI：

  10.1016/j.ejmech.2011.11.037

文献信息

• Iron-Catalyzed Cyclization of Nitrones with Geminal-Substituted Vinyl Acetates: A Direct [4 + 2] Assembly Strategy Leading to 2,4-Disubstituted Quinolines
  作者：Mingbing Zhong、Song Sun、Jiang Cheng、Ying Shao

  DOI：10.1021/acs.joc.6b01910

  日期：2016.11.18

  An iron-catalyzed intermolecular [4 + 2] cyclization of arylnitrones with geminal-substituted vinyl acetates was developed for the synthesis of 2,4-disubstituted quinolines in moderate to good yields with good functional group compatibilities. Preliminary mechanistic studies suggest a plausible iron-catalyzed C–H activation process under external-oxidant-free conditions.

  已开发了铁的芳基硝基酮与双取代的乙酸乙烯酯的铁催化的分子间[4 + 2]环化反应，用于合成2,4-二取代的喹啉，产率中等至良好，且具有良好的官能团相容性。初步的机理研究表明，在无外部氧化剂的条件下，铁催化的CH活化过程似乎是合理的。
• Catalytic Asymmetric 1,3‐Dipolar Cycloaddition of β‐Fluoroalkylated α,β‐Unsaturated 2‐Pyridylsulfones with Nitrones for Chiral Fluoroalkylated Isoxazolidines and γ‐Amino Alcohols
  作者：Xing Yang、Feng Cheng、Ying‐Da Kou、Shuai Pang、Yong‐Cun Shen、Yi‐Yong Huang、Norio Shibata

  DOI：10.1002/anie.201610605

  日期：2017.2

  across various aromatic and aliphatic nitrones in the presence of a chiral NiII/bis(oxazoline) catalyst. The process was tuned by 4 Å molecular sieves, chiral bis(oxazoline) ligands, reaction solvents, and temperature. A wide array of optically pure fluoroalkylated isoxazolidines were obtained, thus facilitating the asymmetric synthesis of an enantioenriched α‐trifluoromethylated γ‐amino alcohol in gram‐scale

  在手性Ni II的存在下，2-吡啶基砜和氟烷基化的基团活化的烯烃在各种芳族和脂肪族硝基上进行了高效的非对映和对映选择性的1,3-偶极环加成反应/双（恶唑啉）催化剂。该过程通过4Å分子筛，手性双（恶唑啉）配体，反应溶剂和温度进行调节。获得了大量光学上纯的氟代烷基化的异恶唑烷，从而促进了对映体富集的对映体富集的克级α-三氟甲基化γ-氨基醇和1,3-氧杂恶嗪-2-酮的三氟甲基化衍生物的合成，具有潜在的药用价值。根据一种加合物的绝对构型和一些对照实验，建立了立体化学模型，以解释观察到的内选择性和对映选择性。
• Cu(II)-catalyzed enantioselective 1,3-dipolar cycloaddition of nitrones with α, β-unsaturated acyl phosphonates
  作者：Lei Xie、Hui Bai、Jiaqi Li、Xuan Yu、Zhenhua Zhang、Bin Fu

  DOI：10.1016/j.tet.2017.03.086

  日期：2017.5

  A highly enantioselective 1, 3-dipolar cycloaddition of nitrone with α, β-unsaturated acyl phosphonate was developed for the first time by using a chiral indane-bis(oxazoline)-copper(II) complex. The reaction proceeded smoothly under mild conditions to provide isoxazolidines with multi-stereocenters in good yields with high to excellent diastereo- (>20:1 dr) and enantioselectivities (up to 99% ee)

  通过使用手性茚满-双（恶唑啉）-铜（II）配合物，首次开发了具有α，β-不饱和酰基膦酸酯的高对映选择性的1,3-偶极环硝基环加成环。反应在温和条件下平稳进行，以高收率和高至优异的非对映异构体（> 20：1 dr）和对映选择性（高达99％ee）提供具有多个立体中心的异恶唑烷。所得产物易于转化为多功能异恶唑烷或γ-氨基醇化合物。
• Rhodium(III)‐Catalyzed Asymmetric Access to Spirocycles through C−H Activation and Axial‐to‐Central Chirality Transfer
  作者：Lingheng Kong、Xi Han、Song Liu、Yun Zou、Yu Lan、Xingwei Li

  DOI：10.1002/anie.202000174

  日期：2020.4.27

  Axial-to-central chirality transfer is an important strategy to construct chiral centers, where the axially chiral reagents are mostly limited to atropomerically stable ones. Reported herein is a RhIII -catalyzed enantioselective spiroannulative synthesis of nitrones. The coupling proceeds via C-H arylation to give an atropomerically metastable biaryl, followed by intramolecular dearomative trapping

  轴向向中心手性转移是构建手性中心的重要策略，其中轴向手性试剂主要限于阻转稳定剂。本文报道了RhIII催化的硝酮的对映选择性螺环合成。偶联通过CH芳基化进行，得到阻转异构的亚稳联芳基，然后在具有高度手性转移的氧化条件下进行分子内脱芳香化捕集。
• Nickel(II)-Catalyzed Enantioselective 1,3-Dipolar Cycloaddition of Nitrones with α,β-Unsaturated Acylcarboxylates
  作者：Lei Xie、Xuan Yu、Jiaqi Li、Zhenhua Zhang、Zhaohai Qin、Bin Fu

  DOI：10.1002/ejoc.201601540

  日期：2017.1.18

  The highly enantioselective 1,3-dipolar cycloaddition of nitrones with α,β-unsaturated acylcarboxylates was realized for the first time by using a chiral bis(indano-oxazoline)-based Ni complex. The reaction proceeded smoothly under mild conditions and provided isoxazolidines with three contiguous stereocenters in high yields with excellent diastereoselectivities (>20:1 dr) and enantioselectivities

  通过使用基于手性双（茚并恶唑啉）的 Ni 配合物，首次实现了硝酮与 α,β-不饱和酰基羧酸酯的高度对映选择性 1,3-偶极环加成反应。该反应在温和条件下顺利进行，并以高产率提供具有三个连续立体中心的异恶唑烷，具有优异的非对映选择性（> 20:1 dr）和对映选择性（高达 99% ee）。反应放大到克级，产物很容易转化为γ-氨基醇和其他潜在的生物活性化合物。