4,5-二甲氧基-2-硝基苯乙酸 | 73357-18-3

• 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: 4,5-二甲氧基-2-硝基苯乙酸
• 中文别名: 2-(4,5-二甲氧基-2-硝基苯基)乙酸；4,5-二甲氧基-2-硝基苯基醋酸
• 英文名称: (4,5-dimethoxy-2-nitrophenyl)acetic acid
• 英文别名: 2-(4,5-dimethoxy-2-nitrophenyl)acetic acid；4,5-dimethoxy-2-nitrobenzeneacetic acid；3,4-Dimethoxy-6-nitrophenylessigsaeure
• CAS: 73357-18-3
• 化学式: C₁₀H₁₁NO₆
• mdl: MFCD00118466
• 分子量: 241.2
• InChiKey: WJPMJFUEMVXUCV-UHFFFAOYSA-N

物化性质

• 熔点：
  206-208°C
• 沸点：
  433.4±40.0 °C(Predicted)
• 密度：
  1.364±0.06 g/cm3(Predicted)
• 溶解度：
  >36.2 [ug/mL]
• 稳定性/保质期：
  远离氧化物。

计算性质

• 辛醇/水分配系数(LogP)：
  1.2
• 重原子数：
  17
• 可旋转键数：
  4
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.3
• 拓扑面积：
  102
• 氢给体数：
  1
• 氢受体数：
  6

安全信息

• 危险等级：
  IRRITANT
• 危险品标志：
  Xi
• 安全说明：
  S26,S36/37/39
• 危险类别码：
  R36/37/38
• 海关编码：
  2918990090
• 危险性防范说明：
  P261,P264,P271,P280,P302+P352,P304+P340,P305+P351+P338,P312,P362,P403+P233,P501
• 危险性描述：
  H315,H319,H335
• 储存条件：
  存放在密封容器中，并放置在阴凉、干燥处。储存地点需远离氧化剂。

SDS

Name:	2-(4 5-Dimethoxy-2-nitrophenyl)acetic acid 95+% Material Safety Data Sheet
Synonym:	4,5-Dimethoxy-2-nitrophenylacetic aci
CAS:	73357-18-3

Section 1 - Chemical Product MSDS Name:2-(4 5-Dimethoxy-2-nitrophenyl)acetic acid 95+% Material Safety Data Sheet
Synonym:4,5-Dimethoxy-2-nitrophenylacetic aci

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Section 2 - COMPOSITION, INFORMATION ON INGREDIENTS

CAS#	Chemical Name	content	EINECS#
73357-18-3	2-(4,5-Dimethoxy-2-nitrophenyl)acetic	95+%	unlisted

Hazard Symbols: XI
Risk Phrases: 36/37/38

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Section 3 - HAZARDS IDENTIFICATION
EMERGENCY OVERVIEW
Irritating to eyes, respiratory system and skin.
Potential Health Effects
Eye:
Causes eye irritation.
Skin:
Causes skin irritation. May be harmful if absorbed through the skin.
Ingestion:
May cause irritation of the digestive tract. May be harmful if swallowed.
Inhalation:
Causes respiratory tract irritation. May be harmful if inhaled.
Chronic:
Not available.

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Section 4 - FIRST AID MEASURES
Eyes: Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.
Skin:
Get medical aid. Flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes.
Ingestion:
Get medical aid. Wash mouth out with water.
Inhalation:
Remove from exposure and move to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
Notes to Physician:
Treat symptomatically and supportively.

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Section 5 - FIRE FIGHTING MEASURES
General Information:
As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear.
Extinguishing Media:
Use water spray, dry chemical, carbon dioxide, or chemical foam.

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Section 6 - ACCIDENTAL RELEASE MEASURES
General Information: Use proper personal protective equipment as indicated in Section 8.
Spills/Leaks:
Vacuum or sweep up material and place into a suitable disposal container.

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Section 7 - HANDLING and STORAGE
Handling:
Avoid breathing dust, vapor, mist, or gas. Avoid contact with skin and eyes.
Storage:
Store in a cool, dry place. Store in a tightly closed container.

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Section 8 - EXPOSURE CONTROLS, PERSONAL PROTECTION
Engineering Controls:
Facilities storing or utilizing this material should be equipped with an eyewash facility and a safety shower. Use adequate ventilation to keep airborne concentrations low.
Exposure Limits CAS# 73357-18-3: Personal Protective Equipment Eyes: Not available.
Skin:
Wear appropriate protective gloves to prevent skin exposure.
Clothing:
Wear appropriate protective clothing to prevent skin exposure.
Respirators:
Follow the OSHA respirator regulations found in 29 CFR 1910.134 or European Standard EN 149. Use a NIOSH/MSHA or European Standard EN 149 approved respirator if exposure limits are exceeded or if irritation or other symptoms are experienced.

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Section 9 - PHYSICAL AND CHEMICAL PROPERTIES

Physical State: Solid
Color: pale yellow
Odor: Not available.
pH: Not available.
Vapor Pressure: Not available.
Viscosity: Not available.
Boiling Point: Not available.
Freezing/Melting Point: Not available.
Autoignition Temperature: Not available.
Flash Point: Not available.
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature:
Solubility in water:
Specific Gravity/Density:
Molecular Formula: C10H11NO6
Molecular Weight: 241

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Section 10 - STABILITY AND REACTIVITY
Chemical Stability:
Not available.
Conditions to Avoid:
Incompatible materials.
Incompatibilities with Other Materials:
Strong oxidizing agents.
Hazardous Decomposition Products:
Nitrogen oxides, carbon monoxide, carbon dioxide.
Hazardous Polymerization: Has not been reported

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Section 11 - TOXICOLOGICAL INFORMATION
RTECS#:
CAS# 73357-18-3 unlisted.
LD50/LC50:
Not available.
Carcinogenicity:
2-(4,5-Dimethoxy-2-nitrophenyl)acetic acid - Not listed by ACGIH, IARC, or NTP.

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Section 12 - ECOLOGICAL INFORMATION

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Section 13 - DISPOSAL CONSIDERATIONS
Dispose of in a manner consistent with federal, state, and local regulations.

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Section 14 - TRANSPORT INFORMATION

IATA
No information available.
IMO
No information available.
RID/ADR
No information available.

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Section 15 - REGULATORY INFORMATION

European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: XI
Risk Phrases:
R 36/37/38 Irritating to eyes, respiratory system
and skin.
Safety Phrases:
S 26 In case of contact with eyes, rinse immediately
with plenty of water and seek medical advice.
S 37/39 Wear suitable gloves and eye/face
protection.
WGK (Water Danger/Protection)
CAS# 73357-18-3: No information available.
Canada
None of the chemicals in this product are listed on the DSL/NDSL list.
CAS# 73357-18-3 is not listed on Canada's Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 73357-18-3 is not listed on the TSCA inventory.
It is for research and development use only.

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SECTION 16 - ADDITIONAL INFORMATION
N/A

反应信息

• 作为反应物：
  描述：

  4,5-二甲氧基-2-硝基苯乙酸 在 氯化亚砜 、 氧气 、 potassium carbonate 、 1,8-二氮杂双环[5.4.0]十一碳-7-烯 、 copper(ll) bromide 、 三氯氧磷 作用下， 以 二氯甲烷 、 水 、 二甲基亚砜 、 乙腈 为溶剂， 反应 16.0h， 生成 (6,7-dimethoxyisoquinolin-1-yl)(4,5-dimethoxy-2-nitrophenyl)-methanone
  参考文献：
  名称：

  通过 1-Bn-DHIQ 的温和 Cu 催化串联氧化/芳构化实现氧代朴啡生物碱的新型全合成†

  摘要：

  开发了新的全合成氧代阿泊啡生物碱，如马钱烯宁、二百曲宁、卡沙美啶、赖西胺、氧代月光碱和O-甲基莫沙托林。这些全合成的关键步骤是通过串联氧化/芳构化，铜催化将 1-苄基-3,4-二氢-异喹啉 (1-Bn-DHIQs) 转化为 1-苯甲酰基-异喹啉 (1-Bz-IQs)。这种新颖的铜催化转化已被详细研究，并成功用于构建 1-Bz-IQ 核心。

  DOI：

  10.1039/c8ra05338c
• 作为产物：
  描述：

  3,4-二甲氧基苯乙酸 在 硝酸 、 溶剂黄146 作用下， 以85 %的产率得到4,5-二甲氧基-2-硝基苯乙酸
  参考文献：
  名称：

  通过 SmI2 促进的 2-硝基苯乙酸还原合成羟吲哚

  摘要：

  首次报道了 SmI2 促进 2-硝基苯乙酸还原为羟吲哚的过程。该反应涉及硝基的还原，通过 N-O 键断裂并与邻近的羧基直接缩合进行。从合成的角度来看，开发了一种在温和中性条件下合成羟吲哚的新方法。

  DOI：

  10.1055/a-2175-1008

文献信息

• The reduction of aromatic nitro groups on solid supports using sodium hydrosulfite (Na2S2O4)
  作者：Randall A Scheuerman、David Tumelty

  DOI：10.1016/s0040-4039(00)00959-x

  日期：2000.8

  An improved method for reducing aromatic nitro compounds on solid-phase supports using sodium hydrosulfite is presented. Conditions have been optimized to enable the use of this reagent for reductions on both polyethyleneglycol-polystyrene (PEG) resins and traditional polystyrene (PS) resins.

  提出了一种使用亚硫酸氢钠还原固相载体上芳族硝基化合物的改进方法。已对条件进行了优化，以使该试剂可用于还原聚乙二醇-聚苯乙烯（PEG）树脂和传统聚苯乙烯（PS）树脂。
• P ^III /P ^V =O Catalyzed Cascade Synthesis of N‐Functionalized Azaheterocycles
  作者：Trevor V. Nykaza、Gen Li、Junyu Yang、Michael R. Luzung、Alexander T. Radosevich

  DOI：10.1002/anie.201914851

  日期：2020.3.9

  the modular synthesis of diverse N-aryl and N-alkyl azaheterocycles (indoles, oxindoles, benzimidazoles, and quinoxalinediones) is reported. The method employs a small-ring organophosphorus-based catalyst (1,2,2,3,4,4-hexamethylphosphetane P-oxide) and a hydrosilane reductant to drive the conversion of ortho-functionalized nitroarenes into azaheterocycles through sequential intermolecular reductive C-N

  报道了一种有机催化方法，用于模块化合成各种N-芳基和N-烷基氮杂杂环（吲哚，羟吲哚，苯并咪唑和喹喔啉二酮）。该方法采用小环有机磷基催化剂（1,2,2,3,4,4-六甲基膦烷P-氧化物）和氢化硅烷还原剂通过顺序的分子间还原性CN交联来驱动邻官能化硝基芳烃转化成氮杂杂环与硼酸偶联，然后进行分子内环化。该方法能够从容易获得的结构单元快速构建氮杂杂环，包括针对N取代的苯并咪唑和喹喔啉二酮的区域特异性方法。
• A Photo‐responsive Small‐Molecule Approach for the Opto‐epigenetic Modulation of DNA Methylation
  作者：Ha Phuong Nguyen、Sabrina Stewart、Mikiembo N. Kukwikila、Sioned Fôn Jones、Daniel Offenbartl‐Stiegert、Shiqing Mao、Shankar Balasubramanian、Stephan Beck、Stefan Howorka

  DOI：10.1002/anie.201901139

  日期：2019.5.13

  Controlling the functional dynamics of DNA within living cells is essential in biomedical research. Epigenetic modifications such as DNA methylation play a key role in this endeavour. DNA methylation can be controlled by genetic means. Yet there are few chemical tools available for the spatial and temporal modulation of this modification. Herein, we present a small-molecule approach to modulate DNA

  在生物医学研究中，控制活细胞内DNA的功能动力学至关重要。表观遗传修饰（例如DNA甲基化）在此过程中起关键作用。DNA甲基化可以通过遗传手段来控制。然而，很少有化学工具可用于这种修饰的时空调制。在这里，我们提出了一种小分子的方法来调节光的DNA甲基化。该策略使用临床使用的药物的光可调版本（5-氮杂2'-脱氧胞苷）来改变DNA甲基化酶（甲基化DNA的酶）的催化活性。细胞吸收后，可以对光调节分子进行光控，以减少增殖细胞中全基因组DNA甲基化水平。化学工具补充了遗传，生化，
• Palladium-Catalyzed Decarboxylative sp³−sp³ Coupling of Nitrobenzene Acetic Esters
  作者：Shelli R. Waetzig、Jon A. Tunge

  DOI：10.1021/ja077070r

  日期：2007.12.1

  Allylic esters of nitrobenzene acetic acids undergo facile palladium-catalyzed decarboxylative coupling. Both mono- and dinitroarene substrates give high yields of the coupled products. Moreover, the rates of the reactions suggest that decarboxylation is rate-limiting and substrates that sterically disfavor attainment of the reactive conformation for decarboxylation are not viable. Finally, reduction

  硝基苯乙酸的烯丙酯容易发生钯催化的脱羧偶联。单硝基芳烃和二硝基芳烃底物都能产生高产率的偶联产物。此外，反应速率表明脱羧是限速的，并且空间上不利于获得脱羧反应构象的底物是不可行的。最后，将产物硝基芳烃还原成相应的苯胺，可以得到多种杂环，包括喹啉和二氢喹诺酮。
• [EN] PHENYLALKYL AND PYRIDYLALKYL PIPERAZINE DERIVATIVES<br/>[FR] DERIVES DE PIPERAZINE PHENYLALKYLES ET PYRIDYLALKYLES
  申请人：WARNER LAMBERT CO

  公开号：WO2004041793A1

  公开（公告）日：2004-05-21

  This invention relates to compounds of the formula (1) wherein R?1, R3, R4, X1, and X2¿ are defined as in the specification, pharmaceutical compositions containing them and their use in the treatment of central nervous system and other disorders.

  这项发明涉及公式（1）中的化合物，其中R1、R3、R4、X1和X2的定义如规范中所述，包含它们的药物组合物以及它们在治疗中枢神经系统和其他疾病中的用途。