2-甲基-5-溴嘧啶 | 7752-78-5

• 物质功能分类: 医药中间体 - 嘧啶类化合物
• 分子结构分类: 有机化合物 - 有机杂环化合物 - 二嗪类
• 中文名称: 2-甲基-5-溴嘧啶
• 中文别名: 5-溴-2-甲基嘧啶
• 英文名称: 5-bromo-2-methylpyrimidine
• 英文别名: 2-methyl-5-bromopyrimidine
• CAS: 7752-78-5
• 化学式: C₅H₅BrN₂
• mdl: MFCD07375143
• 分子量: 173.012
• InChiKey: NEDJTEXNSTUKHW-UHFFFAOYSA-N

物化性质

• 熔点：
  80.0 to 85.0 °C
• 沸点：
  195.2±13.0 °C(Predicted)
• 密度：
  1.596±0.06 g/cm3(Predicted)
• 溶解度：
  溶于甲醇
• 最大波长(λmax)：
  266nm(EtOH)(lit.)
• pKa：
  0.46±0.22 (Predicted,Most Basic Temp: 25 °C)

计算性质

• 辛醇/水分配系数(LogP)：
  1.3
• 重原子数：
  8
• 可旋转键数：
  0
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.2
• 拓扑面积：
  25.8
• 氢给体数：
  0
• 氢受体数：
  2

安全信息

• 危险品标志：
  Xi
• 海关编码：
  2933599090
• 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：
  冷藏保存。

SDS

Material Safety Data Sheet

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Section 1. Identification of the substance
Product Name: 5-Bromo-2-methylpyrimidine
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: 5-Bromo-2-methylpyrimidine
CAS number: 7752-78-5

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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, refrigerated.
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: C5H5BrN2
Molecular weight: 173.0

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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, nitrogen oxides, 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

应用的示例中，2-甲基-5-溴嘧啶是一个常用的有机合成子，能够作为分子骨架参与到生物活性分子的合成修饰中。

制备过程如下：首先，用氮气吹扫并干燥一个10升四颈圆底烧瓶，确保其处于惰性气氛下。将590克（2.07摩尔）的5-溴-2-碘嘧啶溶解在3升四氢呋喃中。随后，在0℃条件下搅拌溶液，缓慢滴加3.11摩尔（1 M）的二甲基锌溶液。接着向体系中加入104毫摩尔的Pd(PPb)4。在保持0℃下继续搅拌反应混合物3小时后，通过添加600毫升NH4Cl水溶液来淬灭反应。使用2 x 1.5升乙酸乙酯（EtOAc）萃取所得溶液，并合并有机萃取液。用无水硫酸镁干燥有机相，并在真空下旋蒸浓缩。最后，在硅胶柱色谱法中通过1:50 EtOAc/石油醚的洗脱比例纯化残留物，从而得到所需的产物。

反应信息

• 作为反应物：
  描述：

  2-甲基-5-溴嘧啶 在 正丁基锂 、 1,1'-双(二苯膦基)二茂铁二氯化钯(II)二氯甲烷复合物 、 硼酸三异丙酯 、 sodium hydride 、 potassium carbonate 、 三氟乙酸 作用下， 以 四氢呋喃 、 1,4-二氧六环 、 二氯甲烷 、 水 、 甲苯 、 mineral oil 为溶剂， 反应 18.5h， 生成 (S)-9-ethyl-8-(2-methylpyrimidin-5-yl)-6-(pyrrolidin-3-yloxy)-9H-purine
  参考文献：
  名称：

  [EN] PURINE INHIBITORS OF HUMAN PHOSPHATIDYLINOSITOL 3-KINASE DELTA
  [FR] INHIBITEURS PURIQUES DE LA PHOSPHATIDYLINOSITOL 3-KINASE DELTA HUMAINE

  摘要：

  本发明提供了一种公式I的化合物，这些化合物是PI3K-δ抑制剂，因此可用于治疗PI3K-δ介导的疾病，如炎症、哮喘、慢性阻塞性肺疾病和癌症。

  公开号：

  WO2014075392A1
• 作为产物：
  描述：

  2-甲基-5-溴嘧啶-4-羧酸 以 5,5-dimethyl-1,3-cyclohexadiene 为溶剂， 反应 2.0h， 以61%的产率得到2-甲基-5-溴嘧啶
  参考文献：
  名称：

  亜鉛結合部分を有するホスホイノシチド３−キナーゼインヒビター

  摘要：

  要解决的问题：提供具有锌结合基团的磷脂酰肌醇3-激酶抑制剂。解决方案：提供了一个由下图中的式（I）表示的化合物。（X为S、O或类似物；Y为CH、N或类似物；G是可选地取代的N或类似物；R和R分别独立地为H或类似物；C为取代的杂环或类似物；B为线性烷基或类似物；R和R与它们结合的氮原子一起是吗啡基或类似物；G是吲唑环或类似物；q、r和s独立地从0到1，但至少其中之一为1；t从0到1；n从0到4；p从0到2。）

  公开号：

  JP2015187145A

文献信息

• [EN] OGA INHIBITOR COMPOUNDS<br/>[FR] COMPOSÉS INHIBITEURS D'OGA
  申请人：JANSSEN PHARMACEUTICA NV

  公开号：WO2021123291A1

  公开（公告）日：2021-06-24

  The present invention relates to O-GlcNAc hydrolase (OGA) inhibitors. The invention is also directed to pharmaceutical compositions comprising such compounds, to processes for preparing such compounds and compositions, and to the use of such compounds and compositions for the prevention and treatment of disorders in which inhibition of OGA is beneficial, such as tauopathies, in particular Alzheimer's disease or progressive supranuclear palsy; and neurodegenerative diseases accompanied by a tau pathology, in particular amyotrophic lateral sclerosis or frontotemporal lobe dementia caused by C9ORF72 mutations; or alpha synucleinopathies, in particular Parkinson's disease, dementia due to Parkinson's (or neurocognitive disorder due to Parkinson's disease), dementia with Lewy bodies, multiple system atrophy, or alpha synucleinopathy caused by Gaucher's disease.

  本发明涉及O-GlcNAc水解酶（OGA）抑制剂。该发明还涉及包含这类化合物的药物组合物，制备这类化合物和组合物的方法，以及利用这类化合物和组合物预防和治疗抑制OGA有益的疾病的用途，例如tau病变，特别是阿尔茨海默病或进行性上行性核瘫痪；以及伴有tau病理的神经退行性疾病，特别是由C9ORF72突变引起的肌萎缩侧索硬化或额颞叶痴呆；或α-突触核蛋白病，特别是帕金森病、帕金森病引起的痴呆（或由帕金森病引起的神经认知障碍）、带有Lewy小体的痴呆、多系统萎缩，或由高雪氏病引起的α-突触核蛋白病。
• [EN] BICYCLIC INHIBITORS OF HISTONE DEACETYLASE<br/>[FR] INHIBITEURS BICYCLIQUES DE L'HISTONE DÉSACÉTYLASE
  申请人：RODIN THERAPEUTICS INC

  公开号：WO2020014602A1

  公开（公告）日：2020-01-16

  Provided herein are compounds of Formula I and pharmaceutically acceptable salts and compositions thereof, which are useful for treating a variety of conditions associated with histone deacetylases (HDAC).

  本文提供了公式I的化合物及其药用盐和组合物，这些化合物对治疗与组蛋白去乙酰化酶（HDAC）相关的各种疾病条件有用。
• Visible Light-Induced Borylation of C–O, C–N, and C–X Bonds
  作者：Shengfei Jin、Hang. T. Dang、Graham C. Haug、Ru He、Viet D. Nguyen、Vu T. Nguyen、Hadi D. Arman、Kirk S. Schanze、Oleg V. Larionov

  DOI：10.1021/jacs.9b12519

  日期：2020.1.22

  photocatalytic borylation method that can effect borylation of a wide range of substrates, including strong C‒O bonds, remains elusive. Herein, we report a general, metal-free visible light-induced photocatalytic borylation platform that enables borylation of electron rich derivatives of phenols and anilines, chloroarenes, as well as other haloarenes. The reac-tion exhibits excellent functional group

  硼酸是中心重要的功能基序和合成前体。可见光诱导的硼酸化可以提供结构多样化的硼酸盐，但一种广泛有效的光催化硼酸化方法可以影响包括强 C-O 键在内的多种底物的硼化，仍然难以实现。在此，我们报告了一种通用的、无金属的可见光诱导光催化硼化平台，该平台能够对苯酚和苯胺、氯芳烃以及其他卤代芳烃的富电子衍生物进行硼化。该反应表现出优异的官能团耐受性，正如一系列结构复杂底物的硼化反应所证明的那样。值得注意的是，该反应是由吩噻嗪催化的，这是一种简单的有机光催化剂，MW< 200通过质子耦合电子转移机制介导了以前无法实现的可见光诱导的苯酚衍生物单电子还原，还原电位为~-3 V vs SCE。机理研究指出了光催化剂-碱相互作用的关键作用。
• Enantioselective Three-Component Fluoroalkylarylation of Unactivated Olefins through Nickel-Catalyzed Cross-Electrophile Coupling
  作者：Hai-Yong Tu、Fang Wang、Liping Huo、Yuanbo Li、Shengqing Zhu、Xian Zhao、Huan Li、Feng-Ling Qing、Lingling Chu

  DOI：10.1021/jacs.0c03708

  日期：2020.5.27

  A nickel-catalyzed, enantioselective, three-component fluoroalkylarylation of unactivated alkenes with aryl halides and perfluoroalkyl iodides has been described. This cross-electrophile coupling protocol utilizes a chiral nickel/BiOx system as well as a pendant chelating group to facilitate the challenging three-component, asymmetric difunctionalization of unactivated alkenes, providing direct access

  镍催化、对映选择性、三组分氟烷基芳基化未活化的烯烃与芳基卤化物和全氟烷基碘化物已被描述。这种交叉亲电偶联方案利用手性镍/BiOx 系统以及悬垂的螯合基团来促进未活化烯烃的具有挑战性的三组分不对称双官能化，从而以高效和出色的对映选择性直接获得有价值的手性 β-氟烷基芳基烷烃. 温和的条件允许广泛的底物范围以及良好的官能团耐受性。
• [EN] P300/CBP HAT INHIBITORS<br/>[FR] INHIBITEURS D'HAT P300/CBP
  申请人：CONSTELLATION PHARMACEUTICALS INC

  公开号：WO2019161162A1

  公开（公告）日：2019-08-22

  Provided are compounds of Formula (I): and pharmaceutically acceptable salts and compositions thereof, which are useful for treating a variety of conditions associated with histone acetyltransferase (HAT).

  提供的是Formula (I)的化合物及其药用可接受的盐和组合物，可用于治疗与组蛋白乙酰转移酶（HAT）相关的各种疾病。