2,3-二氟-4-羟基苯甲酸 | 175968-39-5

• 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: 2,3-二氟-4-羟基苯甲酸
• 英文名称: 2,3-difluoro-4-hydroxybenzoic acid
• CAS: 175968-39-5
• 化学式: C₇H₄F₂O₃
• mdl: MFCD01321116
• 分子量: 174.104
• InChiKey: XIZIDHMVDRRFBT-UHFFFAOYSA-N

物化性质

• 熔点：
  210-211°C
• 沸点：
  313.5±42.0 °C(Predicted)
• 密度：
  1.600±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  1.4
• 重原子数：
  12
• 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：
  57.5
• 氢给体数：
  2
• 氢受体数：
  5

安全信息

• 危险品标志：
  Xi
• 海关编码：
  2918290000
• 危险性防范说明：
  P233,P260,P261,P264,P271,P280,P302+P352,P304,P304+P340,P305+P351+P338,P312,P321,P332+P313,P337+P313,P340,P362,P403,P403+P233,P405,P501
• 危险性描述：
  H315,H319,H335

SDS

Material Safety Data Sheet

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Section 1. Identification of the substance
2,3-Difluoro-4-hydroxybenzoic acid
Product Name:
Synonyms:

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Section 2. Hazards identification
Harmful by inhalation, in contact with skin, and if swallowed.
H315: Causes skin irritation
H319: Causes serious eye irritation
H335: May cause respiratory irritation
P261: Avoid breathing dust/fume/gas/mist/vapours/spray
Wear protective gloves/protective clothing/eye protection/face protection
P280:
P305+P351+P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses if present
and easy to do – continue rinsing
P304+P340: IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing
P405: Store locked up

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Section 3. Composition/information on ingredients.
2,3-Difluoro-4-hydroxybenzoic acid
Ingredient name:
CAS number: 175968-39-5

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Section 4. First aid measures
Immediately wash skin with copious amounts of water for at least 15 minutes while removing
Skin contact:
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.
Wash out mouth with copious amounts of water for at least 15 minutes. Seek medical attention.
Ingestion:

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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.
Storage: Store in closed vessels.

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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
Not specified
Appearance:
Boiling point: No data
Melting point: No data
Flash point: No data
Density: No data
Molecular formula: C7H4F2O3
Molecular weight: 174.1

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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 fluoride.

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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

上下游信息

• 上游原料

  中文名称	英文名称	CAS号	化学式	分子量
  4-(苄氧基)-2,3-二氟苯甲酸	4-(benzyloxy)-2,3-difluorobenzoic acid	144292-54-6	C14H10F2O3	264.228
  ——	2,3-difluoro-4-((triisopropylsilyl)oxy)benzoic acid	1010800-88-0	C16H24F2O3Si	330.447
  2,3,4-三氟苯甲酸	2,3,4,-trifluorobenzoic acid	61079-72-9	C7H3F3O2	176.095
  2,3-二氟-4-氰基苯酚	2,3-difluoro-4-hydroxybenzonitrile	126162-38-7	C7H3F2NO	155.104

• 下游产品

  中文名称	英文名称	CAS号	化学式	分子量
  2,3二氟-4-羟基苯甲酸甲酯	methyl 2,3-difluoro-4-hydroxybenzoate	219685-84-4	C8H6F2O3	188.131
  ——	methyl 2,3-difluoro-4-methoxybenzoate	544704-78-1	C9H8F2O3	202.158
  4-(苄氧基)-2,3-二氟苯甲酸	4-(benzyloxy)-2,3-difluorobenzoic acid	144292-54-6	C14H10F2O3	264.228
  ——	2,3-difluoro-4-(hydroxymethyl)phenol	1472068-00-0	C7H6F2O2	160.12
  2,3-二氟-4-(庚氧基)苯甲酸	2,3-difluoro-4-(heptyloxy)benzoic acid	122265-95-6	C14H18F2O3	272.292
  ——	4-(decyloxy)-2,3-difluorobenzoic acid	122265-98-9	C17H24F2O3	314.373
  ——	2,3-difluoro-4-(undecyloxy)benzoic acid	122265-99-0	C18H26F2O3	328.399
  ——	4-(dodecyloxy)-2,3-difluorobenzoic acid	122265-94-5	C19H28F2O3	342.426
  2,3-二氟-4-(辛基氧基)苯甲酸	2,3-difluoro-4-octyloxybenzoic acid	122265-96-7	C15H20F2O3	286.319
  2,3-二氟-4-(壬氧基)苯甲酸	2,3-difluoro-4-(nonyloxy)benzoic acid	122265-97-8	C16H22F2O3	300.346

反应信息

• 作为反应物：
  描述：

  2,3-二氟-4-羟基苯甲酸 在 盐酸 、 lithium aluminium tetrahydride 作用下， 以 四氢呋喃 、 水 为溶剂， 反应 24.75h， 生成 2,3-difluoro-4-(hydroxymethyl)phenol
  参考文献：
  名称：

  双芳香酶-硫酸酯酶抑制剂4-{[(4-氰基苯基)(4H-1,2,4-三唑-4-基)氨基]甲基}苯基氨基磺酸酯衍生物的合成和构效关系研究

  摘要：

  4-{[(4-氰基苯基)(4 H -1,2,4-三唑-4-基)氨基]甲基}苯基氨基磺酸酯及其邻位卤代（F、Cl、Br）衍生物是第一代双芳香化酶和硫酸酯酶抑制剂（DASI）。对这些化合物进行了构效关系研究，并对它们的结构进行了各种修改，包括重新定位卤素原子、引入更多的卤素原子、用另一个基团替换卤素、用二氟亚甲基接头替换亚甲基接头、用其他环结构取代对氰基苯环，用咪唑基取代三唑基。发现的最有效的体外 DASI 是一种咪唑衍生物，其 IC 为50JEG-3 细胞制剂中针对芳香酶和类固醇硫酸酯酶的值分别为 0.2 和 2.5 n M。该化合物的母体酚抑制芳香酶，在同一试验中的 IC 50值为 0.028 n M。

  DOI：

  10.1002/cmdc.201300015
• 作为产物：
  描述：

  2,3-二氟苯酚 在 2,2,6,6-四甲基哌啶 、 咪唑 、 正丁基锂 、 四丁基氟化铵 作用下， 以 四氢呋喃 、 正己烷 、 N,N-二甲基甲酰胺 为溶剂， 反应 24.0h， 生成 2,3-二氟-4-羟基苯甲酸
  参考文献：
  名称：

  通过有机金属中间体对二氟苯酚和三氟苯酚进行区域功能化

  摘要：

  2,4-二氟苯酚、2,5-二氟苯酚、2,3-二氟苯酚、3,5-二氟苯酚、3,4-二氟苯酚、2,4,5-三氟苯酚和2,3,4-三氟苯酚全部转化为18可能的二氟化或三氟化羟基苯甲酸，它们都是新化合物。酚氢原子被甲氧基甲基或不太常见的三异丙基甲硅烷基取代，其分别发挥邻位活化或邻位屏蔽作用。两侧有两个电子管的站点。取代基（氟、烷氧基）特别容易去质子化。如果要在其他地方引入金属，它们必须通过金属化阻断三甲基甲硅烷基或金属化偏转氯原子的可逆连接来沉默。在所有情况下，除了一个，因此为intramol设置了舞台。邻氧或邻氟位点的金属化之间的竞争。通过依赖适当的底物-试剂匹配，确实可以以任何一种方式确保所需的区域灵活性。这再次证明了有机金属方法在面向多样性的合成中的潜力。[关于 SciFinder (R)]

  DOI：

  10.1055/s-2004-829110

文献信息

• [EN] NICOTINE SALTS, CO-CRYSTALS, AND SALT CO-CRYSTAL COMPLEXES<br/>[FR] SELS, CO-CRISTAUX, ET COMPLEXES DE CO-CRISTAUX DE SELS DE NICOTINE
  申请人：REYNOLDS TOBACCO CO R

  公开号：WO2015183801A1

  公开（公告）日：2015-12-03

  The invention provides certain nicotine salts, co-crystals, and salt co-crystals and provides novel polymorphic forms of certain nicotine salts. In particular, nicotine salts with mucic acid, 3,5-dihydroxybenzoic acid, and 2,3-dihydroxybenzoic acid, and crystalline polymorphic forms of nicotine 4-acetamidobenzoate, nicotine gentisate, and nicotine 1-hydroxy-2-naphthoate are described. The invention further provides methods of preparation and characterization of such nicotine salts, co-crystals, and salt co-crystals and polymorphic forms thereof. In addition, tobacco products, including smoking articles, smokeless tobacco products, and electronic smoking articles comprising nicotine salts, co-crystals, and/or salt co-crystals are also provided.

  该发明提供了某些尼古丁盐、共晶和盐共晶，并提供了某些尼古丁盐的新颖多形态形式。具体来说，描述了与粘酸、3,5-二羟基苯甲酸和2,3-二羟基苯甲酸结合的尼古丁盐，以及尼古丁4-乙酰氨基苯甲酸、尼古丁吉替酸和尼古丁1-羟基-2-萘酸的结晶多形态形式。该发明还提供了制备和表征这些尼古丁盐、共晶和盐共晶以及其多形态形式的方法。此外，还提供了含有尼古丁盐、共晶和/或盐共晶的烟草制品，包括吸烟物品、无烟烟草制品和电子吸烟物品。
• 8-Substituted isoquinoline derivative and the use thereof
  申请人：Kaneko Shunsuke

  公开号：US20100261701A1

  公开（公告）日：2010-10-14

  The present invention relates to a compound represented by the following formula (1): wherein D 1 , A 1 , D 2 , R 1 , D 3 , and R 2 each have the same meaning as defined in the present specification or a salt thereof. The compound represented by the formula (1) or a salt thereof has an IKKβ inhibiting activity and the like and is useful for the prevention and/or treatment of IKKβ-associated diseases or symptoms and the like.

  本发明涉及一种由以下式（1）表示的化合物： 其中D1，A1，D2，R1，D3和R2分别具有与本说明书中定义的相同含义或其盐。由式（1）表示的化合物或其盐具有IKKβ抑制活性等，对于预防和/或治疗IKKβ相关疾病或症状等方面是有用的。
• AROMATIC COMPOUND
  申请人：TAKEDA PHARMACEUTICAL COMPANY LIMITED

  公开号：US20160115128A1

  公开（公告）日：2016-04-28

  Provided is a novel aromatic ring compound having a GPR40 agonist activity and a GLP-1 secretagogue action. A compound represented by the formula: wherein each symbol is as described in the DESCRIPTION, or a salt thereof has a GPR40 agonist activity and a GLP-1 secretagogue action, is useful for the prophylaxis or treatment of cancer, obesity, diabetes, hypertension, hyperlipidemia, cardiac failure, diabetic complications, metabolic syndrome, sarcopenia and the like, and affords superior efficacy.

  提供一种具有GPR40激动剂活性和GLP-1分泌素作用的新型芳香环化合物。具有下式表示的化合物： 其中每个符号如描述中所述，或其盐具有GPR40激动剂活性和GLP-1分泌素作用，对于预防或治疗癌症、肥胖症、糖尿病、高血压、高脂血症、心力衰竭、糖尿病并发症、代谢综合征、肌少症等疾病具有用处，并且具有卓越的疗效。
• [EN] SYNTHESIS OF PYRAZOLES<br/>[FR] SYNTHÈSE DE PYRAZOLES
  申请人：WYETH CORP

  公开号：WO2009091832A1

  公开（公告）日：2009-07-23

  The present invention provides methods of making HCl salts, and methods of using them to modulate alpha7 nicotinic acetylcholine receptors and/or to treat any of a variety of disorders, diseases, and conditions. Provided compounds can affect, among other things, neurological, psychiatric and/or inflammatory system.

  本发明提供了制备HCl盐的方法，以及利用它们调节α7烟碱乙酰胆碱受体和/或治疗各种疾病、疾病和症状的方法。所提供的化合物可以影响神经系统、精神病和/或炎症系统等方面。
• [EN] ALPHA7 NICOTINIC ACETYLCHOLINE RECEPTOR INHIBITORS<br/>[FR] INHIBITEURS DE RÉCEPTEURS NICOTINIQUES ALPHA-7 DE L'ACÉTYLCHOLINE
  申请人：WYETH CORP

  公开号：WO2010009290A1

  公开（公告）日：2010-01-21

  The present invention provides compounds and compositions, methods of making them, and methods of using them to modulate α7 nicotinic acetylcholine receptors and/or to treat any of a variety of disorders, diseases, and conditions. Provided compounds can affect, among other things, neurological, psychiatric and/or inflammatory systems.

  本发明提供了化合物和组合物，制备它们的方法，以及利用它们调节α7烟碱乙酰胆碱受体和/或治疗各种疾病、疾病和症状的方法。所提供的化合物可以影响神经系统、精神病学和/或炎症系统等方面。