2-硝基-4-甲砜基甲苯 | 1671-49-4

• 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-硝基-4-甲砜基甲苯
• 中文别名: 邻硝基对甲砜基甲苯；4-甲基磺酰-2-硝基甲苯；4-甲磺酰基-2-硝基甲苯；2-硝基-4-磺酰甲基甲苯；2-硝基4-(甲基磺酰基)甲苯。(NMST)
• 英文名称: 2-nitro-4-methylsulfonyltoluene
• 英文别名: 1-methyl-4-(methylsulfonyl)-2-nitrobenzene；2-nitro-4-methylsulphonyltoluene；2-nitro-p-methylsulfonyl toluene；NMST；4-Methylsulfonyl-2-nitrotoluene；1-methyl-4-methylsulfonyl-2-nitrobenzene
• CAS: 1671-49-4
• 化学式: C₈H₉NO₄S
• mdl: MFCD00047808
• 分子量: 215.23
• InChiKey: OXBDLEXAVKAJFD-UHFFFAOYSA-N

物化性质

• 熔点：
  120-121°C
• 沸点：
  387.8±42.0 °C(Predicted)
• 密度：
  1.350±0.06 g/cm3(Predicted)
• LogP：
  0.93 at 20℃
• 稳定性/保质期：
  常温常压下稳定，避免氧化物接触。

计算性质

• 辛醇/水分配系数(LogP)：
  1.7
• 重原子数：
  14
• 可旋转键数：
  1
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.25
• 拓扑面积：
  88.3
• 氢给体数：
  0
• 氢受体数：
  4

安全信息

• 安全说明：
  S26,S36/37/39
• 危险品运输编号：
  2811
• 海关编码：
  2904909090
• 危险类别码：
  R23/24/25
• 危险性防范说明：
  P233,P260,P261,P264,P270,P271,P280,P301+P312,P302+P352,P304,P304+P340,P305+P351+P338,P312,P321,P330,P332+P313,P337+P313,P340,P362,P403,P403+P233,P405,P501
• 危险性描述：
  H302,H315,H319,H335
• 储存条件：
  请将容器密封保存，并存放在阴凉、干燥处。

SDS

Material Safety Data Sheet

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Section 1. Identification of the substance
Product Name: 4-Methylsulfonyl-2-nitrotoluene
Synonyms:

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Section 2. Hazards identification
Harmful by inhalation, in contact with skin, and if swallowed.
H361: Suspected of damaging fertility or the unborn child
H302: Harmful if swallowed
H317: May cause an allergic skin reaction
H402: Harmful to aquatic life
H412: Harmful to aquatic life with long lasting effects
P261: Avoid breathing dust/fume/gas/mist/vapours/spray
P273: Avoid release to the environment

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Section 3. Composition/information on ingredients.
Ingredient name: 4-Methylsulfonyl-2-nitrotoluene
CAS number: 1671-49-4

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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.

---

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
No data
Boiling point:
Melting point: No data
Flash point: No data
Density: No data
Molecular formula: C8H9NO4S
Molecular weight: 215.2

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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, sulfur 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

制备方法与用途

用途：用于医药和染料中间体。

反应信息

• 作为反应物：
  描述：

  2-硝基-4-甲砜基甲苯 在 sodium cyanide 、 ruthenium(IV) oxide 、 sodium hypochlorite 、 三乙胺 、 N,N'-二环己基碳二亚胺 作用下， 以 二氯甲烷 为溶剂， 反应 2.0h， 生成 甲基磺草酮
  参考文献：
  名称：

  [EN] PROCESS FOR PREPARATION OF MESOTRIONE AND ITS INTERMEDIATES
  [FR] PROCÉDÉ DE PRÉPARATION DE MÉSOTRIONE ET DE SES INTERMÉDIAIRES

  摘要：

  本公开提供了一种新的、改进的中间化合物制备和从中间化合物合成mesotrione的过程。本公开提供了一种经济、高效和环保的mesotrione制备过程。

  公开号：

  WO2022024094A1
• 作为产物：
  描述：

  甲基硝基苯 在 氯磺酸 、 sodium carbonate 、 sodium sulfite 作用下， 以 水 为溶剂， 反应 23.5h， 生成 2-硝基-4-甲砜基甲苯
  参考文献：
  名称：

  一种甲基磺草酮的制备方法

  摘要：

  本发明提供了一种甲基磺草酮的制备方法，以邻硝基甲苯、氯磺酸、氯化亚砜、亚硫酸钠、氯乙酸、1,3-环己二酮等为原料，在催化剂及酸碱存在下制备目标产物。该制备方法从常见化工原料出发，各步反应流程均为常规操作条件，三废量较小，总收率61%以上，产品纯度高，甲基磺草酮粗品纯度大于98%，并可进一步纯化，适合应用于规模化的工业生产。

  公开号：

  CN103772243B

文献信息

• The polyhedral nature of selenium-catalysed reactions: Se(<scp>iv</scp>) species instead of Se(<scp>vi</scp>) species make the difference in the on water selenium-mediated oxidation of arylamines
  作者：Damiano Tanini、Camilla Dalia、Antonella Capperucci

  DOI：10.1039/d0gc04322b

  日期：——

  Selenium-catalysed oxidations are highly sought after in organic synthesis and biology. Herein, we report our studies on the on water selenium mediated oxidation of anilines. In the presence of diphenyl diselenide or benzeneseleninic acid, anilines react with hydrogen peroxide, providing direct and selective access to nitroarenes. On the other hand, the use of selenium dioxide or sodium selenite leads

  硒催化氧化在有机合成和生物学中备受追捧。在此，我们报告了我们对水硒介导的苯胺氧化的研究。在二苯基二硒化物或苯硒酸存在下，苯胺与过氧化氢反应，直接和选择性地获得硝基芳烃。另一方面，使用二氧化硒或亚硒酸钠会产生氧化偶氮芳烃。仔细的机理分析和77 Se NMR 研究表明，只有 Se( IV ) 物质，如苯过氧硒酸，是参与在水中运行并导致硝基芳烃的催化循环的活性氧化剂。虽然最近在有机溶剂中发生的其他硒催化氧化反应已被证明是通过 Se( VI) 关键中间体，苯胺在水中氧化成硝基芳烃没有。这些发现揭示了有机硒催化转化的多方面性质，并开辟了利用硒基催化的新方向。
• [EN] PHENOXY ACETIC ACID DERIVATIVES<br/>[FR] DÉRIVÉS D'ACIDE PHÉNOXYACÉTIQUE
  申请人：MERCK SERONO SA

  公开号：WO2010092043A1

  公开（公告）日：2010-08-19

  The present invention provides phenoxyacetic acid derivatives of Formula (I) for the treatment of CRTH2 related disorders and disease selected from asthma, atopic dermatitis and inflammatory dermatoses.

  本发明提供了用于治疗与CRTH2相关的疾病和疾病（包括哮喘、特应性皮炎和炎症性皮肤病）的Formula（I）的苯氧乙酸衍生物。
• Selenium-catalyzed intramolecular atom- and redox-economical transformation of<i>o</i>-nitrotoluenes into anthranilic acids
  作者：Yiming Li、Yuhong Wang、Tilong Yang、Zhenyang Lin、Xuefeng Jiang

  DOI：10.1039/d0gc04407e

  日期：——

  Anthranilic acids (AAs) are significant basic chemicals used in pharmaceuticals, agrochemicals, dyes, fragrances, etc. Superfluous steps are always involved in obtaining AAs. Herein, we demonstrate a straightforward strategy to transform abundant o-nitrotoluenes into biologically and pharmaceutically significant AAs without any extra reductants, oxidants and protecting groups. Various sensitive groups

  邻氨基苯甲酸（AAs）是用于制药，农用化学品，染料，香料等的重要基础化学品。获得AA总是涉及多余的步骤。本文中，我们证明了一种直接的策略即可将丰富的邻硝基甲苯转化为具有生物学和药学意义的AA，而无需任何额外的还原剂，氧化剂和保护基。在该转化中可以容许各种敏感基团，例如卤素，硫化物，醛，吡啶，喹啉等。通过几乎定量的硒回收，可以有效地实现一百克规模的操作。进一步的机理研究和DFT计算揭示了拟议的原子交换过程以及硒物种的关键作用。
• Selective synthesis of sulfoxides and sulfones <i>via</i> controllable oxidation of sulfides with <i>N</i>-fluorobenzenesulfonimide
  作者：Xiaobo Xu、Leyu Yan、Shengqiang Wang、Panpan Wang、A-Xiu Yang、Xiaolong Li、Hao Lu、Zhong-Yan Cao

  DOI：10.1039/d1ob01632f

  日期：——

  A practical and mild method for the switchable synthesis of sulfoxides or sulfones via selective oxidation of sulfides using cheap N-fluorobenzenesulfonimide (NFSI) as the oxidant has been developed. These highly chemoselective transformations were simply achieved by varying the NFSI loading with H2O as the green solvent and oxygen source without any additives. The good functional group tolerance makes

  已经开发出一种实用且温和的方法，通过使用廉价的N-氟苯磺酰亚胺(NFSI) 作为氧化剂选择性氧化硫化物来切换合成亚砜或砜。这些高度化学选择性的转化是通过改变 NFSI 负载而实现的，H 2 O 作为绿色溶剂和氧源，没有任何添加剂。良好的官能团耐受性使该策略具有价值。
• 邻氨基苯甲酸及其衍生物及其合成方法和应用
  申请人：华东师范大学

  公开号：CN113387823B

  公开（公告）日：2022-07-08

  本发明公开了一种邻氨基苯甲酸及其衍生物的合成方法，在反应溶剂中，以邻甲基(杂)芳基硝基化合物为反应原料，在水、催化剂、碱和添加剂作用下，合成所述邻氨基苯甲酸及其衍生物。本发明合成方法原料廉价易得，反应操作简单，产率较高，官能团耐受性优秀，为实现在染料、医药、农药、香料等方面具有广泛应用的邻氨基苯甲酸的合成提供了一种简单高效的方法。本发明还公开了所述邻氨基苯甲酸及其衍生物及其应用，具有广泛的应用前景。