2,4-二溴丁酸甲酯 | 29547-04-4

• 物质功能分类: 化学试剂 - 有机试剂 - 酯类
• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 脂肪酰基
• 中文名称: 2,4-二溴丁酸甲酯
• 英文名称: methyl 2,4-dibromobutanoate
• 英文别名: methyl 2,4-dibromobutyrate；2,4-dibromobutyric acid methyl ester
• CAS: 29547-04-4
• 化学式: C₅H₈Br₂O₂
• mdl: MFCD00130152
• 分子量: 259.925
• InChiKey: DQHIGEQXJBMKKY-UHFFFAOYSA-N

物化性质

• 沸点：
  71℃ (5 Torr)
• 密度：
  1.840 g/mL at 20 °C(lit.)

计算性质

• 辛醇/水分配系数(LogP)：
  2.1
• 重原子数：
  9
• 可旋转键数：
  4
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.8
• 拓扑面积：
  26.3
• 氢给体数：
  0
• 氢受体数：
  2

安全信息

• 危险品标志：
  Xi
• 安全说明：
  S26,S36
• 危险类别码：
  R36/37/38
• 危险性防范说明：
  P261,P301+P312,P302+P352,P304+P340,P305+P351+P338
• 危险性描述：
  H302,H315,H319,H335
• 储存条件：
  2-8°C，储存时应使用惰性气体。

SDS

Material Safety Data Sheet

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Section 1. Identification of the substance
Product Name: Methyl 2,4-dibromobutyrate
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
P305+P351+P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses if present
and easy to do – continue rinsing

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Section 3. Composition/information on ingredients.
Ingredient name: Methyl 2,4-dibromobutyrate
CAS number: 29547-04-4

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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.
Storage: Store in closed vessels, refrigerated.

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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
Melting point: No data
Flash point: No data
Density: No data
Molecular formula: C5H8Br2O2
Molecular weight: 259.9

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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

反应信息

• 作为反应物：
  描述：

  2,4-二溴丁酸甲酯 在 四丁基硫酸氢铵 、 potassium carbonate 作用下， 以 乙腈 为溶剂， 反应 20.0h， 生成 1-溴环丙烷羧酸甲酯
  参考文献：
  名称：

  1-溴-1-氰基环丙烷的高效合成

  摘要：

  已开发出一种以廉价的 γ-丁内酯为原料，通过溴化、环化、氨化和脱水反应合成 1-溴-1-氰基环丙烷的有效方法。该序列以良好的产率进行。

  DOI：

  10.3184/174751914x14024165307800
• 作为产物：
  描述：

  γ-丁内酯 、 甲醇 在 溴 、 三溴化磷 作用下， 反应 20.08h， 生成 2,4-二溴丁酸甲酯
  参考文献：
  名称：

  通过 N-硼烷配合物的 α-烷基化，从手性 1-芳基乙胺合成光学活性 2-取代氮杂环丁烷-2-甲腈。

  摘要：

  研究了 N-((S)-1-芳基乙基)氮杂环丁烷-2-甲腈 3 通过形成 N-硼烷配合物 4 的碱促进 α-烷基化反应。例如，在-78℃下用1.2当量的LDA处理非对映体纯硼烷N-((S)-1'-(4''-甲氧基苯基)乙基)氮杂环丁烷-2-甲腈络合物(1S,2S,1'S)-4b ℃，然后在-78℃加入1.3当量的苄基溴并升温至室温，产生α-苄基化(2S,1'S)-5ba，产率72%，(2R,1'S)-5ba，产率2%。提出了这种非对映选择性α-烷基化的机制。我们的方法能够从市售的 (S)-(1-(4-甲氧基苯基)) 开始生产光学活性 2-取代氮杂环丁烷-2-甲腈，例如 α-苄基化 (S)-10a 和 (R)-10a乙）胺。

  DOI：

  10.1039/d1ra04585g
• 作为试剂：
  描述：

  3-氟-4-硝基苯酚 、 2,4-二溴丁酸甲酯 、 potassium carbonate 、 盐酸 在 2,4-二溴丁酸甲酯 、 乙酸乙酯 、 Brine 、 magnesium sulfate 、 silica gel 、 ethyl acetate heptane 作用下， 以 N,N-二甲基甲酰胺 为溶剂， 反应 3.0h， 以to afford the title compound as a light yellow oil (64%) which的产率得到4-bromo-2-(3-fluoro-4-nitro-phenoxy)-butyric acid methyl ester
  参考文献：
  名称：

  Indazole or 4,5,6,7-tetrahydro-indazole derivatives

  摘要：

  本发明涉及一种新型的indazole或4,5,6,7-四氢-indazole衍生物，其化学式为I，其中R1至R8如描述和权利要求中所定义，并且其生理上可接受的盐。这些化合物是FXR调节剂，可用作药物。

  公开号：

  US08008505B2

文献信息

• SYNTHESIS OF CYCLIC AMIDINES
  申请人：Lentzen George

  公开号：US20110178292A1

  公开（公告）日：2011-07-21

  The invention relates to an innovative method for synthesis of cyclic amidines. The synthesis starts from a β-, γ- or δ-lactone which is twofold brominated. After esterification of the carboxyl function, the bromine atoms are nucleophilically substituted and the corresponding diamino compound is obtained. The ring closure to the cyclic amidine is accomplished subsequently by reaction with orthoester, imidate or thioimidate. Owing to interposing additional steps for recovery of the diamino compound in enantiomerically pure form, the enantiomers of the cyclic amidines can be stereoselectively synthesized.

  该发明涉及一种合成环氨基甲酸盐的创新方法。合成从β-、γ-或δ-内酯开始，该内酯经过双溴化。在羧基酯化后，溴原子被亲核取代，得到相应的二氨基化合物。随后通过与正酯、亚胺酯或硫代亚胺的反应实现环氨基甲酸盐的环闭合。由于插入额外步骤以以对映纯形式回收二氨基化合物，因此可以立体选择性地合成环氨基甲酸盐的对映体。
• [EN] COMPOUNDS<br/>[FR] COMPOSÉS
  申请人：GLAXOSMITHKLINE IP DEV LTD

  公开号：WO2018137593A1

  公开（公告）日：2018-08-02

  Provided are novel compounds that inhibit LRRK2 kinase activity, processes for their preparation, compositions containing them and their use in the treatment of or prevention of diseases associated with or characterized by LRRK2 kinase activity, for example Parkinson's disease, Alzheimer's disease and amyotrophic lateral sclerosis (ALS).

  提供了抑制LRRK2激酶活性的新化合物，以及它们的制备方法、含有它们的组合物以及它们在治疗或预防与LRRK2激酶活性相关或以其为特征的疾病中的用途，例如帕金森病、阿尔茨海默病和肌萎缩侧索硬化症（ALS）。
• [EN] COMPOUNDS INHIBITING LEUCINE-RICH REPEAT KINASE ENZYME ACTIVITY<br/>[FR] COMPOSÉS INHIBANT L'ACTIVITÉ ENZYMATIQUE DE LA KINASE À MOTIFS RÉPÉTÉS RICHES EN LEUCINE
  申请人：MERCK SHARP & DOHME

  公开号：WO2014137723A1

  公开（公告）日：2014-09-12

  The present invention is directed to indazole compounds which are potent inhibitors of LRRK2 kinase and useful in the treatment or prevention of diseases in which the LRRK2 kinase is involved, such as Parkinson's Disease. The invention is also directed to pharmaceutical compositions comprising these compounds and the use of these compounds and compositions in the prevention or treatment of such diseases in which LRRK-2 kinase is involved.

  本发明涉及吲唑类化合物，这些化合物是LRRK2激酶的有效抑制剂，并且在治疗或预防LRRK2激酶参与的疾病，如帕金森病中有用。该发明还涉及包含这些化合物的药物组合物，以及在预防或治疗LRRK-2激酶参与的这类疾病中使用这些化合物和组合物。
• [EN] COMPOUNDS INHIBITING LEUCINE-RICH REPEAT KINASE ENZYME ACTIVITY<br/>[FR] COMPOSÉS INHIBANT L'ACTIVITÉ ENZYMATIQUE DE LA KINASE À SÉQUENCE RÉPÉTÉE RICHE EN LEUCINE
  申请人：MERCK SHARP & DOHME

  公开号：WO2014134774A1

  公开（公告）日：2014-09-12

  Disclosed are indazole compounds which are potent inhibitors of LRRK2 kinase and useful in the treatment or prevention of diseases in which LRRK2 kinase is involved. Also disclosed are pharmaceutical compositions in the prevention or treatment of such diseases in which LRRK2 kinase is involved.

  揭示了一种indazole化合物，它们是LRRK2激酶的有效抑制剂，并且在涉及LRRK2激酶的疾病的治疗或预防中有用。还揭示了在涉及LRRK2激酶的这类疾病的预防或治疗中使用的药物组合物。
• [EN] HYDROXY CONTAINING FXR (NR1H4) MODULATING COMPOUNDS<br/>[FR] COMPOSÉS MODULATEURS DE FXR (NR1H4) CONTENANT DES GROUHYDROXY
  申请人：GILEAD SCIENCES INC

  公开号：WO2016096115A1

  公开（公告）日：2016-06-23

  The present invention relates to compounds (1) which bind to the NR1 H4 receptor (FXR) and act as agonists of FXR. The invention further relates to the use of the compounds (1) for the preparation of a medicament for the treatment of diseases and/or conditions through binding of said nuclear receptor by said compounds and to a process for the synthesis of said compounds.

  本发明涉及结合NR1 H4受体（FXR）并作为FXR激动剂的化合物（1）。本发明还涉及利用这些化合物（1）制备药物以治疗疾病和/或病况，通过这些化合物结合所述核受体，并涉及这些化合物的合成过程。