2,5-二溴苯乙酸 | 203314-28-7

• 物质功能分类: 有机原料 - 羧酸类化合物及衍生物
• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 中文名称: 2,5-二溴苯乙酸
• 英文名称: 2,5-dibromophenylacetic acid
• 英文别名: 2-(2,5-dibromophenyl)acetic acid
• CAS: 203314-28-7
• 化学式: C₈H₆Br₂O₂
• 分子量: 293.942
• InChiKey: NKZKFWYEXDBOTP-UHFFFAOYSA-N

物化性质

• 沸点：
  376.4±27.0 °C(Predicted)
• 密度：
  1.969±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.8
• 重原子数：
  12
• 可旋转键数：
  2
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.12
• 拓扑面积：
  37.3
• 氢给体数：
  1
• 氢受体数：
  2

安全信息

• 海关编码：
  2916399090
• 危险性防范说明：
  P261,P280,P305+P351+P338
• 危险性描述：
  H302,H315,H319,H332,H335
• 储存条件：
  室温且干燥

SDS

Material Safety Data Sheet

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Section 1. Identification of the substance
Product Name: (2,5-Dibromophenyl)acetic acid
Synonyms:

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Section 2. Hazards identification
Harmful by inhalation, in contact with skin, and if swallowed.

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Section 3. Composition/information on ingredients.
Ingredient name: (2,5-Dibromophenyl)acetic acid
CAS number: 203314-28-7

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Section 4. First aid measures
Skin contact: Immediately wash skin with copious amounts of water for at least 15 minutes while removing
contaminated clothing and shoes. If irritation persists, seek medical attention.
Eye contact: Immediately wash skin with copious amounts of water for at least 15 minutes. Assure adequate
flushing of the eyes by separating the eyelids with fingers. If irritation persists, seek medical
attention.
Inhalation: Remove to fresh air. In severe cases or if symptoms persist, seek medical attention.
Ingestion: Wash out mouth with copious amounts of water for at least 15 minutes. Seek medical attention.

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Section 5. Fire fighting measures
In the event of a fire involving this material, alone or in combination with other materials, use dry
powder or carbon dioxide extinguishers. Protective clothing and self-contained breathing apparatus
should be worn.

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Section 6. Accidental release measures
Personal precautions: Wear suitable personal protective equipment which performs satisfactorily and meets local/state/national
standards.
Respiratory precaution: Wear approved mask/respirator
Hand precaution: Wear suitable gloves/gauntlets
Skin protection: Wear suitable protective clothing
Eye protection: Wear suitable eye protection
Methods for cleaning up: Mix with sand or similar inert absorbent material, sweep up and keep in a tightly closed container
for disposal. See section 12.
Environmental precautions: Do not allow material to enter drains or water courses.

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Section 7. Handling and storage
Handling: This product should be handled only by, or under the close supervision of, those properly qualified
in the handling and use of potentially hazardous chemicals, who should take into account the fire,
health and chemical hazard data given on this sheet.
Store in closed vessels.
Storage:

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Section 8. Exposure Controls / Personal protection
Engineering Controls: Use only in a chemical fume hood.
Personal protective equipment: Wear laboratory clothing, chemical-resistant gloves and safety goggles.
General hydiene measures: Wash thoroughly after handling. Wash contaminated clothing before reuse.

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Section 9. Physical and chemical properties
Appearance: Not specified
Boiling point: No data
No data
Melting point:
Flash point: No data
Density: No data
Molecular formula: C8H6Br2O2
Molecular weight: 293.9

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Section 10. Stability and reactivity
Conditions to avoid: Heat, flames and sparks.
Materials to avoid: Oxidizing agents.
Possible hazardous combustion products: Carbon monoxide, hydrogen bromide.

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Section 11. Toxicological information
No data.

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Section 12. Ecological information
No data.

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Section 13. Disposal consideration
Arrange disposal as special waste, by licensed disposal company, in consultation with local waste
disposal authority, in accordance with national and regional regulations.

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Section 14. Transportation information
Non-harzardous for air and ground transportation.

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Section 15. Regulatory information
No chemicals in this material are subject to the reporting requirements of SARA Title III, Section
302, or have known CAS numbers that exceed the threshold reporting levels established by SARA
Title III, Section 313.

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SECTION 16 - ADDITIONAL INFORMATION
N/A

制备方法与用途

在500毫升四口反应瓶中加入82克中间体3，并滴加400毫升、2摩尔/升的氢氧化钠水溶液。加热至100℃回流反应。通过TLC监控反应进程，直至完成。冷却至室温后，逐滴滴加36%盐酸至pH值为8，用乙酸乙酯萃取水层。水层再用36%盐酸调至pH值为1～2，析出固体，经抽滤得到类白色固体5-二溴苯乙酸（2），干燥后得73克，产率为83%。

反应信息

• 作为反应物：
  描述：

  2,5-二溴苯乙酸 在 2,6-二甲基吡啶 、 potassium permanganate 、 tris-(dibenzylideneacetone)dipalladium(0) 、 copper(l) iodide 、 草酰氯 、 甲烷磺酸 、 C₂₀H₂₇ClN₂O₂RuS 、 氨 、 甲酸铵 、 potassium acetate 、 palladium diacetate 、 碳酸氢钠 、 potassium carbonate 、 caesium carbonate 、 N,N-二甲基甲酰胺 、 三氟乙酸 、 正丁基二(1-金刚烷基)膦 、 2-二环己基磷-2,4,6-三异丙基联苯 、 甲基磺酸酐 作用下， 以 四氢呋喃 、 甲醇 、 乙二醇二甲醚 、 二氯甲烷 、 N,N-二甲基乙酰胺 、 水 、 N,N-二甲基甲酰胺 、 乙腈 为溶剂， 反应 74.0h， 生成 elbasvir
  参考文献：
  名称：

  [EN] PROCESS FOR PREPARING TETRACYCLIC HETEROCYCLE COMPOUNDS
  [FR] PROCÉDÉ DE PRÉPARATION DE COMPOSÉS HÉTÉROCYCLIQUES TÉTRACYCLIQUES

  摘要：

  本发明涉及制备式(I)的四环杂环化合物的方法，该化合物可用作HCV NS5A抑制剂。本发明还涉及化合物，该化合物可用作制备式(I)化合物的合成中间体。

  公开号：

  WO2015065821A1
• 作为产物：
  描述：

  2,5-二溴苯甲酸 在 氯化亚砜 、 硼烷四氢呋喃络合物 、 硫酸 、 lithium chloride 作用下， 以 四氢呋喃 、 二甲基亚砜 、 N,N-二甲基甲酰胺 为溶剂， 反应 52.4h， 生成 2,5-二溴苯乙酸
  参考文献：
  名称：

  Aminopyridine-Based c-Jun N-Terminal Kinase Inhibitors with Cellular Activity and Minimal Cross-Kinase Activity

  摘要：

  The c-Jun N-terminal kinases (JNK-1, -2, and -3) are members of the mitogen activated protein (MAP) kinase family of enzymes. They are activated in response to certain cytokines, as well as by cellular stresses including chemotoxins, peroxides, and irradiation. They have been implicated in the pathology of a variety of different diseases with an inflammatory component including asthma, stroke, Alzheimer's disease, and type 2 diabetes mellitus. In this work, high-throughput screening identified a JNK inhibitor with an excellent kinase selectivity profile. Using X-ray crystallography and biochemical screening to guide our lead optimization, we prepared compounds with inhibitory potencies in the low-double-digit nanomolar range, activity in whole cells, and pharmacokinetics suitable for in vivo use. The new compounds were over 1,000-fold selective for JNK-1 and -2 over other MAP kinases including ERK2, p38alpha, and p38delta and showed little inhibitory activity against a panel of 74 kinases.

  DOI：

  10.1021/jm060199b

文献信息

• Palladium-Catalyzed [4 + 3] or [2 + 2 + 3] Annulation via C–H Activation and Subsequent Decarboxylation: Access to Heptagon-Embedded Polycyclic Aromatic Hydrocarbons
  作者：Xiumei Yang、Xiahong Chen、Yankun Xu、Minghao Zhang、Guobo Deng、Yuan Yang、Yun Liang

  DOI：10.1021/acs.orglett.1c00520

  日期：2021.4.2

  attractive challenge. Herein a novel palladium-catalyzed [4 + 3] decarboxylative annulation of 2-iodobiphenyls with 2-(2-halophenyl)acrylic acids is reported, which provides an efficient approach for assembling various tribenzo[7]annulenes via a C–H activation and decarboxylation process. Moreover, tribenzo[7]annulenes can be also synthesized via a [2 + 2 + 3] decarboxylative annulation strategy by employing

  在多环芳烃骨架中构造七元环仍然是一个众所周知的难题，但仍是一个有吸引力的挑战。本文报道了一种新颖的钯催化2-碘联苯与2-（2-卤代苯基）丙烯酸的[4 ​​+ 3]脱羧环化反应，它提供了一种通过C–H活化和组装各种三苯并[7]环烯的有效方法。脱羧过程。而且，三苯并[7]环戊烯还可以通过[2 + 2 + 3]脱羧环化策略，通过使用容易获得的1,2-卤代苯，苯基硼酸和2-（2-卤代苯基）丙烯酸来合成。
• 2- and 2,5-substituted phenylketoenols
  申请人：Bayer Aktiengesellschaft

  公开号：US06359151B2

  公开（公告）日：2002-03-19

  The invention relates to novel phenyl-substituted cyclic ketoenols of the formula (I) in which Het represents one of the groups  in which A, B, D, G, X and Z are each as defined in the description, to a plurality of processes and intermediates for their preparation, and to their use as pesticides.

  该发明涉及公式(I)中的新型苯基取代的环状酮烯醇，其中Het代表其中一种基团，在其中A、B、D、G、X和Z各自如描述中定义的多种过程和中间体的制备，以及它们作为杀虫剂的用途。
• 一种2，5－二溴苯乙酸的合成方法
  申请人：南京工业大学

  公开号：CN107759459A

  公开（公告）日：2018-03-06

  本发明公开了一种抗丙肝药物中间体2，5‑二溴苯乙酸的合成。本发明以对二溴苯为原料，经氯甲基化，氰化，水解步骤得到2，5二溴苯乙酸。其中氯甲基化反应中以氯化钠为氯化试剂，多聚甲醛为原料，浓硫酸为溶剂和酸，和多聚甲醛反应生成2，5‑二溴苄氯。再用2，5‑二溴苄氯和氰化亚铜在DMF中回流反应得到2，5‑二溴苯乙腈。最后用2，5‑二溴苯乙腈在氢氧化钠水溶液中水解，再用盐酸酸化，得到产物2，5‑二溴苯乙酸。该发明具有成品低廉，反应条件温和等特点。
• Heteroarylpiperidine And-Piperazine Derivatives
  申请人：Cristau Pierre

  公开号：US20110306620A1

  公开（公告）日：2011-12-15

  Heteroarylpiperidine and -piperazine derivatives of the formula (I), in which the symbols have the meanings given in the description and agrochemically active salts thereof and their use for controlling phytopathogenic harmful fungi and also processes for preparing compounds of the formula (I).

  杂芳基哌啶和-哌嗪衍生物的化学式(I)，其中符号的含义如描述中所示，以及其农药活性盐和用于控制植物病原真菌的使用，以及制备化合物的方法的过程(I)。
• Synthesis of N-Alkoxyindol-2-ones by Copper-Catalyzed Intramolecular N-Arylation of Hydroxamates
  作者：Martins Katkevics、Tatyana Kukosha、Nadezhda Trufilkina

  DOI：10.1055/s-0030-1260328

  日期：2011.10

  The first example of copper-catalyzed intramolecular N-arylation of hydroxamic acid derivatives is presented. Based on this transformation a new method for the synthesis of N-alkoxyindol-2-ones from 2-(2-bromoaryl)acetylhydroxamates has been developed. The reaction conditions tolerate standard hydroxyl protecting groups on the hydroxylamine moiety and are also applicable for the synthesis of six-membered N-alkoxybenzolactams.

  首次展示了铜催化的羟胺衍生物的分子内部N-芳基化反应。基于这一转化，开发了一种从2-(2-溴芳基)乙酰羟胺酯合成N-烷氧基吲哚-2-酮的新方法。反应条件能够容忍羟胺部分的标准羟基保护基团，且同样适用于合成六元N-烷氧基苯内酰胺。