2,3,5-tribromo-1,4-benzoquinone | 25779-26-4

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: 2,3,5-tribromo-1,4-benzoquinone
• 英文别名: tribromo-[1,4]benzoquinone；Tribrom-[1,4]benzochinon；Tribrom-chinon；2,3,5-Tribrom-benzochinon-(1,4)；2,3,5-Tribrom-p-benzochinon；2,3,6-Tribromchinon；2,3,5-Tribromocyclohexa-2,5-diene-1,4-dione
• CAS: 25779-26-4
• 化学式: C₆HBr₃O₂
• 分子量: 344.785
• InChiKey: WQZQUBIIUWHJSK-UHFFFAOYSA-N

物化性质

• 熔点：
  150 °C
• 沸点：
  309.8±42.0 °C(Predicted)
• 密度：
  2.800±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.7
• 重原子数：
  11
• 可旋转键数：
  0
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  34.1
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  2,3,5-tribromo-1,4-benzoquinone 在 sodium hydroxide 作用下， 生成 2,5-二溴-3,6-二羟对苯醌
  参考文献：
  名称：

  Sarauw, Justus Liebigs Annalen der Chemie, 1881, vol. 209, p. 109

  摘要：

  DOI：
• 作为产物：
  描述：

  2,5-二溴-1,4-苯醌 在 乙醇 、 氢溴酸 、 三氯化铁 作用下， 生成 2,3,5-tribromo-1,4-benzoquinone
  参考文献：
  名称：

  Sarauw, Justus Liebigs Annalen der Chemie, 1881, vol. 209, p. 109

  摘要：

  DOI：

文献信息

• ARYLATION OF QUINONES BY DIAZONIUM SALTS: VII. SYNTHESIS AND STRUCTURE OF SOME ARYL-CHLORO-<i>p</i>-BENZOQUINONES
  作者：Jehanbux F. Bagli、Ph. L'Écuyer

  DOI：10.1139/v61-128

  日期：1961.5.1

  A careful re-examination of the arylation (P. Brassard and P. L'Écuyer. Can. J. Chem. 36, 814(1958)). reaction with chlorobenzoquinone has revealed in its products the presence of all the three possible disubstituted isomeric quinones. Arylation using diazotized p-nitro-aniline has resulted in the isolation of the three new isomeric quinones, whose structures are assigned, based on chemical and spectral evidences. Mechanistic implications in the arylation and halogenation of benzoquinones are discussed.

  对氯化苯醌的芳基化反应（P. Brassard和P. L'Écuyer. Can. J. Chem. 36, 814(1958)）进行了仔细的重新检查，发现在其产物中存在所有三种可能的二取代异构醌。使用重氮化的对硝基苯胺进行芳基化反应，已经分离出三种新的异构醌，其结构基于化学和光谱证据进行了指派。讨论了在苯醌的芳基化和卤素化反应中的机制含义。

• Odor Identification Impairments in Schizophrenia: Relationship With Demographic Measures, Clinical Variables, and Diagnostic Subtypes
  作者：Eliza Coleman、Raymond R. Goetz、David Leitman、Scott Yale、Ariel Stanford、Jack M. Gorman、Dolores Malaspina

  DOI：10.1017/s1092852900022252

  日期：2002.1

  Smell identification deficits are consistently found in schizophrenia (SZ), but little is known about the nature and characterization of this deficit or its relationship to the phenomenology of the illness. This study aims to further delineate smell identification errors in SZ by examining the relationship of patient demographic differences with smell-identification performance. Our results showed that a patient's gender and education were related to odor-identification scores, with better performance seen in female patients and in those with greater educational attainment. However, there was no effect related to age, ethnicity, or socioeconomic status on odor identification. A smell identification deficit was also unrelated to clinical characteristics of the patients, including age at first hospitalization, number of psychiatric hospitalizations, and duration of illness. Odor identification also did not differ by SZ subtype, nor between SZ and schizoaffective disorder patients. These findings emphasize that odor identification deficits in SZ are unrelated to clinical illness features, cannot be explained by other confounds related to olfaction in the general population, and may be core features related to the SZ disease process.

  摘要精神分裂症（SZ）患者一直存在嗅觉识别缺陷，但人们对这种缺陷的性质和特征及其与疾病现象学的关系知之甚少。本研究旨在通过研究患者的人口统计学差异与气味识别能力之间的关系，进一步界定精神分裂症患者的气味识别错误。我们的研究结果表明，患者的性别和教育程度与气味识别得分有关，女性患者和教育程度较高的患者的气味识别得分更高。然而，年龄、种族或社会经济地位对气味识别没有影响。气味识别缺陷也与患者的临床特征无关，包括首次住院的年龄、精神病住院次数和病程。气味识别能力也不因精神分裂症亚型而异，也不因精神分裂症患者和精神分裂情感障碍患者而异。这些研究结果强调，SZ患者的气味识别障碍与临床疾病特征无关，不能用普通人群中与嗅觉有关的其他混杂因素来解释，而且可能是与SZ疾病过程有关的核心特征。
• Phase diagram studies in the quasi binary systems LaMnO₃–SrMnO₃ and LaMnO₃–CaMnO₃
  作者：Peter Majewski、Lars Epple、Michael Rozumek、Heike Schluckwerder、Fritz Aldinger

  DOI：10.1557/jmr.2000.0164

  日期：2000.5

  The quasi binary systems LaMnO 3 –SrMnO 3 and LaMnO 3 –CaMnO 3 were studied. Both systems show a miscibility gap at intermediate La:Sr and La:Ca ratios below about 1400 °C in air. This phenomenon causes the decomposition of single-phase (La,Sr)MnO 3− x and (La,Ca)MnO 3− x solid solution into La-rich SrMnO 3− x + Sr-rich LaMnO 3− x and La-rich CaMnO 3− x + Ca-rich LaMnO 3− x at lower temperatures, respectively

  研究了准二元体系LaMnO 3 -SrMnO 3 和LaMnO 3 -CaMnO 3 。两种系统在空气中低于约 1400 °C 的中间 La:Sr 和 La:Ca 比率下均显示出混溶间隙。这种现象导致单相(La,Sr)MnO 3− x 和(La,Ca)MnO 3− x 固溶体分解为富La SrMnO 3− x + 富Sr LaMnO 3− x 和富La CaMnO 3− x + 富钙 LaMnO 3− x 分别在较低温度下。在 1400 °C 的 LaMnO 3 –SrMnO 3 体系中，没有观察到 (La,Sr)MnO 3 随着 Sr 含量的增加从斜方晶向菱面体的结构转变，La 0.7 Sr 0.3 MnO 3 的结构被确定为斜方晶系，a = 0.54927 ± 0.0009 nm，b = 0.54582 ± 0.0009 nm，c 4 0.76772 ± 0.0034 nm。
• Method for preparation of carbon quantum dots and application
  申请人：INSTITUTE OF PROCESS ENGINEERING, CHINESE ACADEMY OF SCIENCES

  公开号：US10174204B2

  公开（公告）日：2019-01-08

  The present invention provides carbon quantum dots, preparation method and uses thereof. The preparation method of the carbon quantum dots comprises the following steps: (1) preparing a dispersion of carbon based material; (2) mixing a solution of halogenated quinone with the dispersion of carbon based material and preparing a dispersion of carbon based-halogenated quinone composite material by halogenated quinone grafting method; (3) adding a solution of H2O2 to the dispersion of carbon based-halogenated quinone composite material and carrying out reaction thereof, obtaining reaction products; (4) carrying out solid-liquid separation to the reaction products, with the resulting filtrate continuing to react, thus obtaining a dispersion of carbon quantum dots. This method adopts metal-free catalytic oxidation, the process of which is safe, convenient and low-cost, and is performed under a mild reaction condition without adding additional substances which are difficult to be separated. The obtained quantum dots have a good dispersibility and can be easily separated, also can achieve pollution treatment using pollutants. In addition, the prepared carbon quantum dots have a broad application prospect in the fields of organic pollutant degradation, electrochemical sensors, super capacitors, luminescent materials and photoelectric devices, etc.

  本发明提供了碳量子点及其制备方法和用途。碳量子点的制备方法包括以下步骤：(1）制备碳基材料分散液；（2）将卤代醌溶液与碳基材料分散液混合，通过卤代醌接枝法制备碳基-卤代醌复合材料分散液；(4) 对反应产物进行固液分离，滤液继续反应，得到碳量子点分散液。该方法采用无金属催化氧化法，工艺安全、方便、成本低，在温和的反应条件下进行，无需添加其他难以分离的物质。得到的量子点具有良好的分散性，易于分离，也可以利用污染物实现污染处理。此外，制备的碳量子点在有机污染物降解、电化学传感器、超级电容器、发光材料和光电器件等领域具有广阔的应用前景。
• Gray, Michael J.; Hartshorn, Michael P.; Penfold, Bruce R., Australian Journal of Chemistry, 1984, vol. 37, # 1, p. 55 - 64
  作者：Gray, Michael J.、Hartshorn, Michael P.、Penfold, Bruce R.、Vaugnan, John

  DOI：——

  日期：——