2-甲基-5-硝基苯并咪唑 | 1792-40-1

• 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 - 有机杂环化合物 - 苯并咪唑类
• 中文名称: 2-甲基-5-硝基苯并咪唑
• 中文别名: 2-甲基-5-硝基-1H-苯并咪唑；2-甲基-6-硝基苯并咪唑；1H-苯并咪唑,2-甲基-5-硝基-；苯并咪唑,2-甲基-5-硝基-；2-甲基-6-硝基-1H-苯并咪唑
• 英文名称: 2-methyl-5-nitrobenzimidazole
• 英文别名: 2-methyl-5-nitro-1H-benzimidazole；2-methyl-5-nitro-1H-benzo[d]imidazole；2-methyl-6-nitro-benzimidazole；5(6)-nitro 2-methyl benzimidazole
• CAS: 1792-40-1
• 化学式: C₈H₇N₃O₂
• mdl: MFCD00005599
• 分子量: 177.162
• InChiKey: RKRXTVLCZDPERO-UHFFFAOYSA-N

物化性质

• 熔点：
  223-225 °C
• 沸点：
  446.0±18.0 °C(Predicted)
• 密度：
  1.437±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  1.9
• 重原子数：
  13
• 可旋转键数：
  0
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.125
• 拓扑面积：
  74.5
• 氢给体数：
  1
• 氢受体数：
  3

安全信息

• 危险等级：
  IRRITANT
• 海关编码：
  2933990090
• 危险性防范说明：
  P261,P305+P351+P338
• 危险性描述：
  H315,H319,H335
• 储存条件：
  室温且干燥环境中使用。

SDS

Material Safety Data Sheet

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Section 1. Identification of the substance
Product Name: 2-Methyl-5-nitro-1H-1,3-benzodiazole
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-Methyl-5-nitro-1H-1,3-benzodiazole
CAS number: 1792-40-1

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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: C8H7N3O2
Molecular weight: 177.2

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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：

  2-甲基-5-硝基苯并咪唑 在 铁粉 、 iron(II) sulfate 作用下， 以 水 为溶剂， 反应 5.0h， 生成 5-氨基-2-甲基苯并咪唑
  参考文献：
  名称：

  具有抗癌活性的5-取代2-甲基苯并咪唑的合成

  摘要：

  3-(2-甲基-nz-1H-be 5)的硫代羧酰亚胺基吡唑基5、苯基吡唑基6、二甲基吡唑基7、硝基苯基吡唑基8、二甲基恶唑基9、苯并恶氮杂10和嘧啶基11a-c衍生物的一系列化合物ylazo) 戊烷-2, 4-二酮被合成。此外，5-氨基-2-甲基苯并咪唑(3)与邻苯二甲酸酐或马来酸酐在乙酸或甲苯中反应生成12-15。用氰基乙酸乙酯或丙二酸二乙酯或乙酰丙酮处理 5, 6-二氨基-2-甲基苯并咪唑 (16) 导致形成苯二氮卓衍生物 17-20。针对 60 种人类癌细胞系测试了化合物 2、7、9、10 和 11 的细胞毒活性。发现化合物 7 和 9 是最有效的。

  DOI：

  10.1002/ardp.200390005
• 作为产物：
  描述：

  N-acetyl-2-amino-5-nitroaniline 在 三氯氧磷 作用下， 以 乙酸乙酯 为溶剂， 生成 2-甲基-5-硝基苯并咪唑
  参考文献：
  名称：

  [EN] 3-AZABICYCLO [3.1.0] HEXANE DERIVATIVES AS VANILLOID RECEPTOR LIGANDS
  [FR] DÉRIVÉS DE 3-AZABICYCLO[3.1.0]HEXANE UTILISÉS COMME LIGANDS DES RÉCEPTEURS VANILLOÏDES

  摘要：

  公开号：

  WO2009090548A3

文献信息

• Simple and chemoselective reduction of aromatic nitro compounds to aromatic amines: reduction with hydriodic acid revisited
  作者：J.S.Dileep Kumar、ManKit M Ho、Tatsushi Toyokuni

  DOI：10.1016/s0040-4039(01)01083-8

  日期：2001.8

  Reduction of aromatic nitro compounds to amines with hydriodic acid was reinvestigated. Under a milder non-refluxing condition (at 90°C for 2–4 h), the reduction proceeded efficiently with excellent chemoselectivity without affecting other functional groups including nitrile, ester, halide, carbonyl, amide, sulfonamide, imidazole and methylthio groups.

  重新研究了用氢碘酸将芳香族硝基化合物还原为胺。在温和的非回流条件下（在90°C下持续2-4 h），还原反应有效地进行，具有出色的化学选择性，而不会影响其他官能团，包括腈，酯，卤化物，羰基，酰胺，磺酰胺，咪唑和甲硫基。
• Rhodium catalyzed 2‐alkyl‐benzimidazoles synthesis from benzene‐1,2‐diamines and tertiary alkylamines as alkylating agents
  作者：Yamini、Saurabh Sharma、Pralay Das

  DOI：10.1002/aoc.6278

  日期：2021.8

  synthesized from benzene-1,2-diamine and tertiary amines as alkylating agent under polystyrene supported rhodium (Rh@PS) nanoparticles (NPs) catalyzed conditions. The heterogeneous rhodium catalyst was applied first time for the synthesis of 2-alkyl-benzimidazoles. The reaction followed through oxidation of alkylamines, transamination, and oxidative cyclisation with benzene-1,2-diamines for the corresponding

  在聚苯乙烯负载的铑（Rh@PS）纳米颗粒（NPS）催化条件下，以苯-1,2-二胺和叔胺为烷基化剂合成了取代的2-烷基-苯并咪唑。多相铑催化剂首次用于合成2-烷基-苯并咪唑。该反应通过烷基胺的氧化、氨基转移和与苯-1,2-二胺的氧化环化以良好的产率合成相应的产物。该工艺适用于广泛的底物范围，可以容忍多个官能团，并且 Rh@PS 催化剂最多可循环使用 4 次，催化活性没有显着损失。
• Imidazolium chloride-catalyzed synthesis of benzimidazoles and 2-substituted benzimidazoles from o-phenylenediamines and DMF derivatives
  作者：Zongjie Gan、Qingqiang Tian、Suqin Shang、Wen Luo、Zeshu Dai、Huajun Wang、Dan Li、Xuetong Wang、Jianyong Yuan

  DOI：10.1016/j.tet.2018.11.014

  日期：2018.12

  general, and economical synthesis of diversely functionalized benzimidazoles and 2-substituted benzimidazoles has been realized via the imidazolium chloride-catalyzed cyclization of o-phenylenediamines with DMF derivatives. This protocol shows a broad substrate scope for aliphatic, aromatic, and heteroaromatic amides. A series of benzimidazoles and 2-substituted benzimidazoles have been obtained in moderate

  已经通过咪唑氯化物与DMF衍生物的邻苯二胺的环化反应，实现了功能多样的苯并咪唑和2-取代的苯并咪唑的简便，通用且经济的合成。该协议显示了脂族，芳族和杂芳族酰胺的广泛底物范围。已经以中等至优异的产率获得了一系列苯并咪唑和2-取代的苯并咪唑。
• Nanoporous TiO₂ containing an ionic liquid bridge as an efficient and reusable catalyst for the synthesis of <i>N</i>,<i>N</i>′-diarylformamidines, benzoxazoles, benzothiazoles and benzimidazoles
  作者：M. Mazloumi、F. Shirini、O. Goli-Jolodar、M. Seddighi

  DOI：10.1039/c8nj00171e

  日期：——

  In this work, a green and efficient procedure is reported for the preparation of N,N'-diarylformamidines, benzoxazoles, benzothiazoles, and benzimidazoles using nanoporous TiO2 containing an ionic liquid bridge. This reagent is prepared via the modification of nanoporous TiO2 with bis-3-(trimethoxysilylpropyl)-ammonium hydrogen sulfate (TiO2-[bip]-NH2+ HSO4−). The procedure gave the products in excellent

  在这项工作中，报道了使用含有离子液体桥的纳米多孔TiO 2制备N，N'-二芳基甲am，苯并恶唑，苯并噻唑和苯并咪唑的绿色高效方法。这种试剂制备通过纳米多孔TiO 2的变形例2与双-3-（三甲氧基甲硅烷） -铵硫酸氢（的TiO 2 - [BIP] -NH 2 + HSO 4 - ）。该方法在无溶剂条件下以非常短的反应时间以优异的收率得到了产物。催化剂的可重复使用性是所报道方法的另一个重要特征。
• Expeditious and Efficient Synthesis of Benzoxazoles, Benzothiazoles, Benzimidazoles Catalyzed by Ga(OTf)3 under Solvent-Free Conditions
  作者：Juyan Liu、Qian Liu、Wei Xu、Weilu Wang

  DOI：10.1002/cjoc.201180310

  日期：2011.8

  new and efficient method for the synthesis of benzoxazoles, benzothiazoles, benzimidazoles from reactions of o‐substituted aminoaromatics with orthoesters in the presence of catalytic amounts of Ga(OTf)3 under solvent‐free conditions is presented. The remarkable features of this new protocol are high conversion, very short reaction times, cleaner reaction profiles under solvent‐free conditions, straight

  提出了在无溶剂条件下，在催化量的Ga（OTf）3存在下，由邻位取代的氨基芳烃与原酸酯反应合成苯并恶唑，苯并噻唑，苯并咪唑的新方法。该新方案的显着特征是高转化率，非常短的反应时间，在无溶剂条件下更干净的反应曲线，直接的程序以及使用相对无毒的催化剂。

表征谱图