2,4-二羟基苯甲醛肟 | 5399-68-8

• 物质功能分类: 化学试剂 - 有机试剂 - 肟
• 分子结构分类: 有机化合物 - 苯类化合物 - 酚类
• 中文名称: 2,4-二羟基苯甲醛肟
• 英文名称: 2,4-dihydroxyphenylaldoxime
• 英文别名: 2,4-dihydroxybenzaldehyde oxime；2,4-dihydroxybenzaldoxime；4-((Hydroxyimino)methyl)benzene-1,3-diol；4-(hydroxyiminomethyl)benzene-1,3-diol
• CAS: 5399-68-8
• 化学式: C₇H₇NO₃
• mdl: MFCD00016410
• 分子量: 153.137
• InChiKey: YIAZXUFZAYNWTP-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.9
• 重原子数：
  11
• 可旋转键数：
  1
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  73
• 氢给体数：
  3
• 氢受体数：
  4

安全信息

• 危险等级：
  IRRITANT
• 海关编码：
  2928000090

反应信息

• 作为反应物：
  描述：

  2,4-二羟基苯甲醛肟 在 氢氧化钾 、 乙酸酐 、 zinc(II) chloride 作用下， 以 氯苯 为溶剂， 反应 21.0h， 生成 (4S)-4,5-dihydro-2-(2',4'-dihydroxyphenyl)-4-methyloxazole
  参考文献：
  名称：

  Improving FLC Properties. Simplicity, Planarity, and Rigidity in New Chiral Oxazoline Derivatives

  摘要：

  In an attempt to develop new dopants for improved ferroelectric properties in liquid crystals, aryloxazolines have been chosen as chiral moieties. They were prepared in optically active form from (s)-beta-amino alcohols via a short stereospecific synthesis and incorporated into mesogenic systems. Mesogenic and ferroelectric properties of 11 compounds in five series of chiral oxazoline derivatives [I(OH), I(H), II(OH), II(H), and III(OH)] have been studied. In order to establish the relationship between the molecular structure and ferroelectric properties, an in-depth structural investigation of both H-bonded and non-H-bonded phenyloxazoline moieties was carried out (by means of semiempirical calculations-AM1-and spectroscopic studies-IR, UV and H-1 NMR). These studies have proved a planar structure for both types of structures, which should have a strong influence on ferroelectric properties. These properties have been evaluated in 10 mol % binary mixtures. The highest Ps values were measured for compounds of series I(OH) [P-s max(I(OH)a) = 16.7 nC/cm(2), P-s max(I(OH)b) = 13.2 nC/cm(2)] containing a hydrogen bond, which makes the chiral part of the molecule more rigid. Compound III(OH)a shows a wide SmC* phase range which supercools well below room temperature, and it has been studied as a ferroelectric liquid crystal in the pure state. The P-s max measured is appreciably high: 225 nC/cm(2). Its special thermal behavior (showing a glass transition at -28 degrees C) makes this compound very interesting from the point of view of practical applications and will be the target of further studies.

  DOI：

  10.1021/ja00137a003
• 作为产物：
  描述：

  2,4-二羟基苯甲醛 在 盐酸羟胺 、 potassium carbonate 作用下， 以 水 为溶剂， 以42%的产率得到2,4-二羟基苯甲醛肟
  参考文献：
  名称：

  具有强效抗结核分枝杆菌活性的简单芳基肟和硝基呋喃衍生物的合成和合成孔径雷达研究

  摘要：

  背景：肟和硝基呋喃基衍生物是药物化学中特别重要的化合物。因此，据报道，许多研究人员具有抗菌、抗寄生虫、杀虫和杀真菌活性。方法：在这项工作中，我们报告了一系列五十种芳基肟 ArCH=N-OH, I 和八种硝基呋喃基化合物 2-硝基呋喃基-X, II 的合成和抗结核分枝杆菌 H37RV 的生物活性。结果：在肟中，I：Ar = 2-OH-4-OH，42 和 I：Ar = 5-硝基呋喃基，46，分别在 3.74 和 32.0 µM 处具有最佳活性。还有，46，硝基呋喃化合物，II；X = MeO，55 和 II：X = NHCH2Ph，58，（分别为 14.6 和 12.6 µM），表现出优异的生物活性并且无细胞毒性。结论：化合物55显示出9.85的选择性指数。使用化合物 55 进行了进一步的抗菌测试，该化合物对粪肠球菌、肺炎克雷伯菌、铜绿假单胞菌、金黄色葡萄球菌、鼠伤寒沙门氏菌和福氏志贺氏菌无活

  DOI：

  10.2174/1570180816666181227115738

文献信息

• Perfluoroalkanosulfonyl fluoride: A useful reagent for dehydration of aldoximes to nitriles
  作者：Zhao-Hua Yan、Huan Tian、Dong-Dong Zhao、Hong-Ai Jin、Wei-Sheng Tian

  DOI：10.1016/j.cclet.2015.11.004

  日期：2016.1

  Abstract The reaction of a variety of aldoximes with perfluoroalkanosulfonyl fluoride in the presence of 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) in dichloromethane smoothly generated the corresponding nitriles in 70%–95% yields.

  摘要在二氯甲烷中存在1,8-二氮杂双环[5.4.0] undec-7-ene（DBU）的情况下，各种醛肟与全氟链烷磺酰氟的反应均能以70％–95％的收率平稳地生成相应的腈。
• Efficient symmetrical bidentate dioxime ligand-accelerated homogeneous palladium-catalyzed Suzuki–Miyaura coupling reactions of aryl chlorides
  作者：Jinyi Song、Hongyan Zhao、Yang Liu、Huatao Han、Zhuofei Li、Wenyi Chu、Zhizhong Sun

  DOI：10.1039/c6nj02815b

  日期：——

  synthesized using the Vilsmeier–Haack reaction and oximation. 2,5-Dihydroxyterephthalaldehyde dioxime (L8) as an efficient N,O-symmetrical bidentate ligand was prepared from hydroquinone. It was studied as a high activity ligand for palladium-catalyzed Suzuki–Miyaura cross-coupling reactions of aryl chlorides with arylboronic acids under mild conditions. The coupling reactions were performed in the presence

  使用Vilsmeier-Haack反应和肟化合成了一系列N，O-双齿配体。由对苯二酚制备作为有效的N，O-对称双齿配体的2，5-二羟基对苯甲醛二肟（L 8）。作为温和条件下芳基氯化物与芳基硼酸的钯催化的Suzuki-Miyaura交叉偶联反应的高活性配体，已对其进行了研究。偶联反应在PdCl 2作为催化剂，L 8作为配体，Na 2 CO 3存在下进行在85°C下，PEG-400作为PTC，在乙醇/水（1：1）中作为对环境无害的溶剂。通过优化的反应在0.20 mol％的低钯负载下以良好的收率获得了大量的联芳基。
• Heterogeneous Catalytic Method for the Conversion of Aldoximes into Nitriles Using Molecular Sieve Modified with Copper(II)
  作者：Árpád Kiss、Zoltán Hell

  DOI：10.1080/00397911.2012.667861

  日期：2013.7.3

  Abstract A simple heterogeneous metal-catalyzed method was developed for the transformation of aldoximes into nitriles. Molecular sieve (4 Å) modified with copper(II) proved to be an efficient catalyst for the conversion. Supplemental materials are available for this article. Go to the publisher's online edition of Synthetic Communications® to view the free supplemental file. GRAPHICAL ABSTRACT

  摘要 开发了一种简单的多相金属催化方法将醛肟转化为腈。经铜 (II) 改性的分子筛 (4 Å) 被证明是转化的有效催化剂。补充材料可用于本文。转至出版商的 Synthetic Communications® 在线版以查看免费的补充文件。图形概要
• 4-Cyanoresorcinol-Based Bent-Core Mesogens with Azobenzene Wings: Emergence of Sterically Stabilized Polar Order in Liquid Crystalline Phases
  作者：Mohammed Alaasar、Marko Prehm、Kathrin May、Alexey Eremin、Carsten Tschierske

  DOI：10.1002/adfm.201302295

  日期：2014.3

  compounds, ranging from cybotactic nematic via paraelectric SmC phases, polarization randomized SmCsPR phases to ferroelectric and antiferroelectric SmC phases, associated with increasing size and correlation length of the polar domains. Spontaneous formation of chiral domains is observed in the paraelectric SmC and the SmCsPR phases and discussed in relation with superstructural chirality, bend elastic

  合成了一系列新的含偶氮苯的弯曲核分子，这些弯曲核分子以4-氰基间苯二酚为中心核心单元，表现出等向性向列相，矩形，柱状和不同类型的倾斜近晶（SmC）相。使用各种实验技术，可以在块状和自由悬浮的薄膜中表征中间相的行为和相结构。根据链长和温度的不同，在这些化合物中观察到一系列不同的中间相，从顺向向列相到顺电SmC相，到极化随机的SmC s P R。相到铁电和反铁电SmC相，这与极性域的大小和相关长度增加有关。在顺电SmC和SmC s P R相中观察到手性域的自发形成，并讨论了与超结构手性，弯曲弹性常数和表面效应有关的问题。
• A study on fluoride detection and assembly of hydroxyaromatic aldoximes caused by tetrabutylammonium fluoride
  作者：Arup Tarai、Jubaraj B. Baruah

  DOI：10.1039/c4ce02311k

  日期：——

  Different assemblies formed by the interactions of tetrabutylammonium fluoride with hydroxy-aromatic oximes show characteristic optical properties.

  通过四丁基氟铵与羟基芳香肟的相互作用形成的不同组装体表现出特征性的光学性质。

表征谱图