1-溴-2,5-二甲氧基-4-甲基苯 | 13321-74-9

• 物质功能分类: 有机原料
• 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: 1-溴-2,5-二甲氧基-4-甲基苯
• 中文别名: 2,5-二甲氧基-4-溴甲苯；4-溴-2,5-二甲氧基甲苯
• 英文名称: 1-bromo-2,5-dimethoxy-4-methylbenzene
• 英文别名: 4-bromo-2,5-dimethoxytoluene
• CAS: 13321-74-9
• 化学式: C₉H₁₁BrO₂
• 分子量: 231.089
• InChiKey: YDRBZEYUYXQONG-UHFFFAOYSA-N

物化性质

• 熔点：
  77-78

计算性质

• 辛醇/水分配系数(LogP)：
  3.2
• 重原子数：
  12
• 可旋转键数：
  2
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.33
• 拓扑面积：
  18.5
• 氢给体数：
  0
• 氢受体数：
  2

安全信息

• 危险品标志：
  Xi
• 安全说明：
  S26,S37/39
• 危险类别码：
  R36/37/38
• 海关编码：
  2909309090
• 危险性防范说明：
  P305+P351+P338
• 危险性描述：
  H302,H315,H319
• 储存条件：
  室温且干燥

SDS

Name:	1-Bromo-2 5-dimethoxy-4-methylbenzene 97% Material Safety Data Sheet
Synonym:	4-Bromo-2,5-dimethoxytoluen
CAS:	13321-74-9

Section 1 - Chemical Product MSDS Name:1-Bromo-2 5-dimethoxy-4-methylbenzene 97% Material Safety Data Sheet
Synonym:4-Bromo-2,5-dimethoxytoluen

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Section 2 - COMPOSITION, INFORMATION ON INGREDIENTS

CAS#	Chemical Name	content	EINECS#
13321-74-9	1-Bromo-2,5-dimethoxy-4-methylbenzene	97%	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# 13321-74-9: 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: white
Odor: Not available.
pH: Not available.
Vapor Pressure: Not available.
Viscosity: Not available.
Boiling Point: Not available.
Freezing/Melting Point: 77 - 78 deg C
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: C9H11BrO2
Molecular Weight: 231

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Section 10 - STABILITY AND REACTIVITY
Chemical Stability:
Not available.
Conditions to Avoid:
Incompatible materials.
Incompatibilities with Other Materials:
Oxidizing agents.
Hazardous Decomposition Products:
Carbon monoxide, carbon dioxide, hydrogen bromide, acrid smoke and fumes, bromine.
Hazardous Polymerization: Has not been reported

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Section 11 - TOXICOLOGICAL INFORMATION
RTECS#:
CAS# 13321-74-9 unlisted.
LD50/LC50:
Not available.
Carcinogenicity:
1-Bromo-2,5-dimethoxy-4-methylbenzene - 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# 13321-74-9: No information available.
Canada
None of the chemicals in this product are listed on the DSL/NDSL list.
CAS# 13321-74-9 is not listed on Canada's Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 13321-74-9 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：

  1-溴-2,5-二甲氧基-4-甲基苯 在 ammonium cerium (IV) nitrate 、 乙酸酐 作用下， 以 乙腈 为溶剂， 反应 3.0h， 生成 7-methyl-5,8-quinolinedione
  参考文献：
  名称：

  1,4-萘醌和喹啉-5,8-二酮作为抗疟药和杀血吸虫剂的合成和生物学评价†

  摘要：

  通过基于区域选择性杂化的两步直接合成，在萘醌核心的两个不同位置（甲萘醌的 C-5 和 C-8）引入氮，从而提高多取代 1,4-萘醌衍生物的溶解度。狄尔斯-阿尔德反应。对这些多取代氮杂-1,4-萘醌衍生物的抗疟和抗血吸虫活性进行了评估，并选择了具有抗疟和抗血吸虫作用的不同化合物。使用 AgNO 3和过二硫酸铵对Ag II辅助的苯乙酸氧化自由基脱羧进行修饰，生成具有改善的药代动力学参数、高抗疟作用和抑制 β-血红素形成能力的 3-吡啶甲基甲萘醌。

  DOI：

  10.1039/c2ob25812a
• 作为产物：
  描述：

  甲基苯醌 在 sodium hydroxide 、 三甲基溴硅烷 、 N,N,N,N-tetraethylammonium tetrafluoroborate 作用下， 以 乙腈 为溶剂， 生成 1-溴-2,5-二甲氧基-4-甲基苯
  参考文献：
  名称：

  从海洋来源的青霉菌真菌中合成三戊基化甲苯醌和甲苯氢醌的代谢物

  摘要：

  两个triprenylated甲苯醌和甲基氢醌的海洋真菌代谢物，5-甲基-2 - [（2' ê，6' ë）-3'，7'，11'-三甲基-2'，6'，10'-dodecatrienyl] -2- ，5-环己二烯-1,4-二酮和5-甲基-2 - [（2' ê，6' ë）-3,7,11-三甲基-2'，6'，10'-dodecatrienyl] -1,1-从2-甲基-1,4-苯醌分四个步骤和五个步骤分别合成4-苯二醇。该合成扩展了酸性条件下对苯二酚二甲醚与氧化银的氧化醚裂解的适用性，包括聚戊二酰化的1,4-二甲氧基-甲苯对苯二酚的氧化脱甲基作用，对氧化和酸敏感的聚异戊二烯侧链具有一定的存活率。

  DOI：

  10.1016/j.tetlet.2006.09.117

文献信息

• Synthesis of Quinones from Hydroquinone Dimethyl Ethers. Oxidative Demethylation with Cobalt(III) Fluoride
  作者：Ayumi Tomatsu、Syunji Takemura、Kimiko Hashimoto、Masaya Nakata

  DOI：10.1055/s-1999-2875

  日期：1999.9

  The oxidative demethylation of 1,4-dimethoxynaphthalene and 1,4-dimethoxybenzene derivatives with cobalt(III) fluoride proceeded in good to excellent yield to afford the corresponding naphthoquinone and benzoquinone derivatives.

  用三氟化钴对1,4-二甲氧基萘和1,4-二甲氧基苯衍生物进行氧化脱甲基反应，能够获得良好至极佳的产率，从而得到相应的萘醌和苯醌衍生物。
• Approach to Merosesquiterpenes via Lewis Acid Catalyzed Nazarov-Type Cyclization: Total Synthesis of Akaol A
  作者：Badrinath N. Kakde、Nivesh Kumar、Pradip Kumar Mondal、Alakesh Bisai

  DOI：10.1021/acs.orglett.6b00446

  日期：2016.4.15

  asymmetric synthesis of carbotetracyclic core of merosesquiterpenes. The reaction works only in the presence of 2 mol % of Sn(OTf)2 and Bi(OTf)3 in dichloroethane under elevated temperature. The methodology offers the synthesis of a variety of enantioenriched arylvinylcarbinols from commercially available (3aR)-sclareolide 9 in six steps with an eventual concise total synthesis of marine sesquiterpene quinol

  已经开发了路易斯酸催化的芳基乙烯基甲醇的纳扎罗夫型环化反应，用于不对称合成倍半萜的碳四环核。该反应仅在升高的温度下在二氯乙烷中存在2mol％的Sn（OTf）2和Bi（OTf）3的情况下起作用。该方法可分六步从市售（3a R）-香紫苏内酯9合成多种对映体富集的芳基乙烯基甲醇，最终精制全合成的海洋倍半萜烯喹醇，又名A醇（1a）。
• Palladium-Catalyzed Synthesis of Pyrayaquinones, Murraya­quinones, and Murrayafoline-B
  作者：Hans-Joachim Knölker、Sebastian Kutz、Arndt Schmidt

  DOI：10.1055/s-0036-1588322

  日期：——

  the total synthesis of murrayafoline-B and seven carbazole-1,4-quinone alkaloids. A palladium(II)-catalyzed oxidative cyclization is used to construct the carbazole skeleton. Pyran annulation and oxidation provide pyrayaquinone-A, -B, and -C. DIBAL-H-promoted reductive ring opening of pyrano[3,2-a]carbazole precursors leads to the prenylated and geranylated carbazole-1,4-quinone alkaloids murrayaquinone-B

  献给教授迪特尔·恩德斯在他70之际个生日。 抽象的 我们描述了murrayafoline-B和七个咔唑-1,4-醌生物碱的总合成。钯（II）催化的氧化环化反应可用于构建咔唑骨架。吡喃环化和氧化提供吡喃醌-A，-B和-C。吡喃并[3,2- a ]咔唑前体的DIBAL-H促进的还原开环会导致异戊烯基和Geranylated咔唑-1,4-醌生物碱murrayaquinone-B，-C，-D和-E，并导致murrayafoline- B． 我们描述了murrayafoline-B和七个咔唑-1,4-醌生物碱的总合成。钯（II）催化的氧化环化反应可用于构建咔唑骨架。吡喃环化和氧化提供吡喃醌-A，-B和-C。吡喃并[3,2- a ]咔唑前体的DIBAL-H促进的还原开环会导致异戊烯基和Geranylated咔唑-1,4-醌生物碱murrayaquinone-B，-C，-D和-E，并导致murrayafoline-
• Catalytic Asymmetric Hydrogenation of α-CF₃- or β-CF₃-Substituted Acrylic Acids using Rhodium(I) Complexes with a Combination of Chiral and Achiral Ligands
  作者：Kaiwu Dong、Yang Li、Zheng Wang、Kuiling Ding

  DOI：10.1002/anie.201307903

  日期：2013.12.23

  Only the mixture works! Acrylic acid derivatives with CF3 substituents in α or β position were efficiently hydrogenated in the presence of a RhI complex with a chiral secondary phosphine oxide (SPO; see scheme) and an achiral Ph3P as ligands. The corresponding propanoic acid derivatives were obtained with generally high conversion (>99 %) and high enantioselectivity (92–>99 %).

  只有混合物有效！在具有手性仲氧化膦（SPO；参见方案）和非手性Ph 3 P作为配体的Rh I络合物的存在下，在α或β位置具有CF 3取代基的丙烯酸衍生物被有效地氢化。相应的丙酸衍生物通常具有较高的转化率（> 99％）和高的对映选择性（92-> 99％）。
• Expedient synthesis of novel β-ketoesters from the Mizoroki–Heck coupling of ethyl 3-ethoxyacrylate with aryl and pyridyl halides
  作者：Jeffrey T. Kohrt、Ed Conn、Robert Maguire、Stephen W. Wright、Robert Singer

  DOI：10.1016/j.tetlet.2013.10.076

  日期：2013.12

  for the synthesis of a range of heterocyclic templates. While there are many useful synthetic methods available to access these intermediates, there are still opportunities for the discovery of useful methodologies for their construction from novel starting materials. In this regard, we report on the discovery of a facile Pd-catalyzed Mizoroki–Heck coupling of ethyl 3-ethoxyacrylate with aryl and heteroaryl

  众所周知，β-酮酸酯是用于合成一系列杂环模板的有用中间体。尽管有许多有用的合成方法可用于获得这些中间体，但仍然有机会从新型原料中发现有用的方法来构建它们。在这方面，我们报告了一种发现，该反应是3-乙氧基丙烯酸乙酯与芳基和杂芳基卤化物在钯的催化下易于催化的Pid催化的Mizoroki-Heck偶联反应，形成取代的烷氧基丙烯酸酯，可以水解形成新型的芳基和杂芳基β-酮酸酯。

表征谱图