1,3-二甲基-4-硝基吡唑 | 3920-38-5

• 物质功能分类: 有机原料 - 杂环化合物
• 分子结构分类: 有机化合物 - 有机1,3-偶极化合物 - 烯丙基型1,3-偶极有机化合物
• 中文名称: 1,3-二甲基-4-硝基吡唑
• 中文别名: 4-硝基-1,3-二甲基吡唑
• 英文名称: 1,3-dimethyl-4-nitropyrazole
• 英文别名: 1,3-dimethyl-4-nitro-1H-pyrazole；1,3-Dimethyl-4-nitropyrazol
• CAS: 3920-38-5
• 化学式: C₅H₇N₃O₂
• mdl: MFCD00464263
• 分子量: 141.129
• InChiKey: AKFKERAVXIGUNB-UHFFFAOYSA-N

物化性质

• 熔点：
  72 °C
• 沸点：
  243.0±20.0 °C(Predicted)
• 密度：
  1.36±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  0.5
• 重原子数：
  10
• 可旋转键数：
  0
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.4
• 拓扑面积：
  63.6
• 氢给体数：
  0
• 氢受体数：
  3

安全信息

• 危险等级：
  IRRITANT
• 海关编码：
  2933199090
• 危险性防范说明：
  P261,P305+P351+P338
• 危险性描述：
  H302,H315,H319,H335

SDS

Material Safety Data Sheet

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Section 1. Identification of the substance
Product Name: 1,3-Dimethyl-4-nitro-1H-pyrazole
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: 1,3-Dimethyl-4-nitro-1H-pyrazole
CAS number: 3920-38-5

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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: C5H7N3O2
Molecular weight: 141.1

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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, nitrogen oxides.

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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：

  1,3-二甲基-4-硝基吡唑 以 乙醚 为溶剂， 反应 2.5h， 生成 4-hydroxyimino-1,3,5,5-tetramethyl-2-pyrazoline
  参考文献：
  名称：

  吡唑和吡唑鎓盐与复杂的金属氢化物和有机金属试剂的反应。吡唑啉和吡唑烷的合成

  摘要：

  2-吡唑啉-4-肟是通过4-亚硝基和4-硝基吡唑与复杂的金属氢化物和有机金属试剂的反应合成的。此外，4-硝基吡唑鎓四氟硼酸盐是有机锂和格氏试剂的反应性底物，从而导致新的和高度取代的4-硝基-3-吡唑啉和4-硝基吡唑烷。3-吡唑啉的形成是区域选择性的，并且当可能存在非对映异构体吡唑烷时，仅获得最稳定的3,4-反式和/或4,5-反式异构体。

  DOI：

  10.1016/s0040-4020(97)00514-0
• 作为产物：
  描述：

  5-肼基-1,3-二甲基-4-硝基-1H-吡唑 在 ammonium cerium (IV) nitrate 作用下， 以 甲醇 为溶剂， 生成 1,3-二甲基-4-硝基吡唑
  参考文献：
  名称：

  CAN-Mediated Oxidation of Electron-Deficient Aryl and Heteroaryl Hydrazines and Hydrazides

  摘要：

  芳基和杂芳基肼及肼酰胺成功地通过CAN被氧化，生成去肼化产物。反应途径强烈依赖于底物的性质，导致烃或烷氧衍生物的形成。当使用氘化溶剂，如氘代甲醇（methanol-d₄）或氘代乙腈（acetonitrile-d₃）时，实现了氘的区域特异性结合。

  DOI：

  10.1055/s-2007-1072749

文献信息

• [EN] SUBSTITUTED PYRIMIDINE COMPOUNDS, COMPOSITIONS AND MEDICINAL APPLICATIONS THEREOF<br/>[FR] COMPOSÉS DE PYRIMIDINE SUBSTITUÉE, COMPOSITIONS ET APPLICATIONS MÉDICINALES CORRESPONDANTES
  申请人：JUBILANT BIOSYS LTD

  公开号：WO2015025197A1

  公开（公告）日：2015-02-26

  The present disclosure relates to pyrimidine compounds of formula (I), their stereoisomers, tautomers, pharmaceutically acceptable salts, polymorphs, solvates, and hydrates thereof. The present disclosure also relates to process of preparation of these pyrimidine compounds, and to pharmaceutical compositions containing them. The compounds of the present disclosure are useful in the treatment, prevention or suppression of diseases and disorders mediated by epidermal growth factor receptor (EGFR) family kinases.

  本公开涉及式(I)的嘧啶化合物，它们的立体异构体、互变异构体、药学上可接受的盐、多型体、溶剂合物和水合物。本公开还涉及制备这些嘧啶化合物的方法，以及含有它们的药物组合物。本公开的化合物在治疗、预防或抑制由表皮生长因子受体（EGFR）家族激酶介导的疾病和紊乱方面具有用途。
• A Simple and Environmentally Benign Nitration of Pyrazoles by Impregnated Bismuth Nitrate
  作者：P. Ravi、Girish M. Gore、Surya P. Tewari、Arun K. Sikder

  DOI：10.1002/jhet.1093

  日期：2013.11

  environmentally friendly synthesis of nitropyrazoles in good yields using silica‐bismuth nitrate and silica‐sulfuric acid‐bismuth nitrate at room temperature for the first time. The relatively non‐toxic nature, ease of handling, easy availability, and low cost make the present procedure attractive for the nitration of a wide variety of diazoles in the drug and pharmaceutical industries.

  我们在这里首次报道了室温下使用二氧化硅-硝酸铋和二氧化硅-硫酸-硝酸铋以高收率轻松，快速，环保地合成硝基吡唑的方法。相对无毒的性质，易于处理，易于获得以及成本低廉，使得本方法对于制药和制药行业中各种二唑的硝化具有吸引力。
• 炔基嘧啶或炔基吡啶类化合物、及其组合物与应用
  申请人：北京赛特明强医药科技有限公司

  公开号：CN111484482B

  公开（公告）日：2022-06-21

  本发明涉及具有式(I)的炔基嘧啶或炔基吡啶类化合物或其药学可接受的盐、异构体、溶剂化物、结晶或前药，以及含有这些化合物的药物组合物和这些化合物或组合物在药物制备中的应用，所述药物可以作为ABL、ABL‑T315I、KIT及VEGFR‑2等激酶抑制剂用于治疗相关的疾病。
• Design and Synthesis of Highly Potent and Isoform Selective JNK3 Inhibitors: SAR Studies on Aminopyrazole Derivatives
  作者：Ke Zheng、Sarah Iqbal、Pamela Hernandez、HaJeung Park、Philip V. LoGrasso、Yangbo Feng

  DOI：10.1021/jm501256y

  日期：2014.12.11

  expressed primarily in the brain. Numerous reports have shown that inhibition of JNK3 is a promising strategy for treatment of neurodegeneration. The optimization of aminopyrazole-based JNK3 inhibitors with improved potency, isoform selectivity, and pharmacological properties by structure–activity relationship (SAR) studies utilizing biochemical and cell-based assays, and structure-based drug design is reported

  c-jun N末端激酶3（JNK3）主要在大脑中表达。大量报告表明，抑制JNK3是治疗神经退行性疾病的一种有前途的策略。据报道，通过利用生物化学和基于细胞的分析的结构-活性关系（SAR）研究以及基于结构的药物设计，优化了具有增强的效能，同工型选择性和药理特性的基于氨基吡唑的JNK3抑制剂。这些抑制剂具有对JNK1和p38α的高选择性，最小的细胞毒性，对6-OHDA诱导的线粒体膜电位耗散和ROS生成的有效抑制，以及静脉给药的良好药物代谢和药代动力学（DMPK）特性。26n已针对464种激酶进行了分析，结果发现该酶具有高选择性，仅能击中7种激酶，在10μM时抑制率> 80％。此外，26n显示出良好的溶解度，良好的大脑渗透能力和良好的DMPK特性。最后，在1.8Å处解析了与JNK3形成的26k晶体结构，以探索基于氨基吡唑的JNK3抑制剂的结合模式。
• C–H Amination of Nitro Azaheterocyclic Compounds by Vicarious Nucleophilic Substitution
  作者：Chun Cai、Ru-Shuang Zhou

  DOI：10.1055/a-1672-7285

  日期：2022.1

  Various nitro azaheterocyclic compounds were subjected to C–H amination by vicarious nucleophilic substitution with 4H-1,2,4-triazol-4-amine (ATA). The aminated products were characterized by NMR, mass spectroscopy, and single-crystal X-ray diffraction analyses. The substrates examined gave moderate to excellent yields (30–88%) and showed good regioselectivities. This protocol offers the advantages

  各种硝基氮杂杂环化合物通过与 4H-1,2,4-三唑-4-胺 (ATA) 的替代亲核取代进行 C-H 胺化。胺化产物通过核磁共振、质谱和单晶 X 射线衍射分析进行表征。检查的底物具有中等至极好的产率（30-88%），并显示出良好的区域选择性。该方案具有条件温和、反应时间短（2-4 小时）以及廉价、市售且毒性较低的胺化试剂等优点；此外，不需要额外的催化剂或试剂。讨论了可能的反应机理。