N-乙基-4-溴苯甲酰胺 | 41882-25-1

• 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: N-乙基-4-溴苯甲酰胺
• 中文别名: 4-溴-n-乙基苯甲酰胺
• 英文名称: 4-Bromo-N-ethylbenzamide
• 英文别名: N-ethyl-4-bromobenzamide；N-ethyl-p-bromobenzocarboxamide
• CAS: 41882-25-1
• 化学式: C₉H₁₀BrNO
• mdl: MFCD01211865
• 分子量: 228.088
• InChiKey: JXFKDGIMTQHLIT-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.2
• 重原子数：
  12
• 可旋转键数：
  2
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.222
• 拓扑面积：
  29.1
• 氢给体数：
  1
• 氢受体数：
  1

安全信息

• 危险品标志：
  Xi
• 海关编码：
  2924299090

SDS

Material Safety Data Sheet

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Section 1. Identification of the substance
N-Ethyl 4-bromobenzamide
Product Name:
Synonyms: 4-Bromo-N-ethylbenzamide

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Section 2. Hazards identification
Harmful by inhalation, in contact with skin, and if swallowed.
H315: Causes skin irritation
H319: Causes serious eye irritation
H335: May cause respiratory irritation
P261: Avoid breathing dust/fume/gas/mist/vapours/spray
P305+P351+P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses if present
and easy to do – continue rinsing
P302+P352: IF ON SKIN: Wash with soap and water
P321: Specific treatment (see on this label)
P405: Store locked up

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Section 3. Composition/information on ingredients.
N-Ethyl 4-bromobenzamide
Ingredient name:
CAS number: 41882-25-1

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Section 4. First aid measures
Immediately wash skin with copious amounts of water for at least 15 minutes while removing
Skin contact:
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.
Wash out mouth with copious amounts of water for at least 15 minutes. Seek medical attention.
Ingestion:

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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.

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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
Not specified
Appearance:
Boiling point: No data
Melting point: No data
Flash point: No data
Density: No data
Molecular formula: C9H10BrNO
Molecular weight: 228.1

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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, hydrogen bromide.

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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：

  N-乙基-4-溴苯甲酰胺 在 叔丁基锂 作用下， 以 乙醚 为溶剂， 反应 0.5h， 以39%的产率得到N-乙苯甲醯胺
  参考文献：
  名称：

  Selectivities in reactions of organolithium reagents with aryl bromides which bear proton-donating groups

  摘要：

  Studies of substrates which offer an acidic hydrogen and an aryl bromide for reaction with an organolithium reagent have been carried out with a series of benzene bromo amides and bromo anilides as well as selected benzene bromo carboxylic acids, bromoanilines, and bromobenzylamines. A representative example is the reaction of N-ethyl-N-deutero-o-bromobenzamide (6-d) with 1-lithio-3-phenylpropane to give N-ethyl-o-deuterobenzamide (46%, 94%-d) (7-d), N-ethyl-o-bromobenzamide (6)(49%), 3-deutero-1-phenylpropane(51%, 92%-d), and 1-bromo-3-phenylpropane (48%). Product formation in this and related cases is explained by the operation of a two step sequence in which an initial deprotonation is followed by a bromine-lithium exchange which is accelerated with respect to mixing. Such a sequence is consistent with the results of deuterium labeling and with changes in product ratios on different mixing and with differently aggregated organolithium reagents. Support is provided for the operation of two pathways for the expedited bromine-lithium exchange reactions. In one pathway a high local concentration of the organolithium reagent promotes rapid reaction and in the second the exchange reaction occurs within an initially formed complex. The selectivity for removal of a bromine ortho to a lithiated carboxamide is found to be 5-8 with n-butyllithium, and satisfactory synthetic ortho selectivity is obtained for N-ethyl-2,5-dibromobenzamide with phenyllithium.

  DOI：

  10.1021/jo00078a007
• 作为产物：
  描述：

  4-溴苄醇 在 叔丁基过氧化氢 、 Iron(III) nitrate nonahydrate 、 2,2,6,6-四甲基哌啶氧化物 、 calcium carbonate 作用下， 以 水 、 乙腈 为溶剂， 反应 18.0h， 生成 N-乙基-4-溴苯甲酰胺
  参考文献：
  名称：

  Tandem oxidative amidation of benzyl alcohols with amine hydrochloride salts catalysed by iron nitrate

  摘要：

  A tandem process for the oxidative amidation of benzyl alcohols with amine hydrochloride salts has been developed using inexpensive Fe(NO3)(3) as the catalyst, air and aqueous t-butyl hydroperoxide as oxidants. A wide range of benzamides have been synthesized under mild conditions. This greener amide formation method provides an economical and practical assess to benzamides from readily available and inexpensive starting materials. (C) 2013 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tetlet.2013.07.005

文献信息

• Bis(trialkylsilyl) peroxides as alkylating agents in the copper-catalyzed selective mono-N-alkylation of primary amides
  作者：Ryu Sakamoto、Shunya Sakurai、Keiji Maruoka

  DOI：10.1039/c7cc02910a

  日期：——

  The copper-catalyzed selective mono-N-alkylation of primary amides with bis(trialkylsilyl) peroxides as alkylating agents was reported. The results of a mechanistic study suggest that this reaction should proceed via a free radical process that includes the generation of alkyl radicals from bis(trialkylsilyl) peroxides.

  据报道，铜催化的伯酰胺的选择性单-N-烷基化以双（三烷基甲硅烷基）过氧化物作为烷基化剂。机理研究的结果表明，该反应应通过自由基过程进行，该过程包括由双（三烷基甲硅烷基）过氧化物生成烷基。
• Alkylsilyl Peroxides as Alkylating Agents in the Copper-Catalyzed Selective Mono-<i>N</i> -Alkylation of Primary Amides and Arylamines
  作者：Ryu Sakamoto、Shunya Sakurai、Keiji Maruoka

  DOI：10.1002/chem.201702217

  日期：2017.7.6

  alkylsilyl peroxides as alkylating agents is reported. The reaction proceeds under mild reaction conditions and exhibits a broad substrate scope with respect to the alkylsilyl peroxides, as well as to the primary amides and arylamines. Mechanistic studies suggest that the present reaction should proceed through a free-radical process that includes alkyl radicals generated from the alkylsilyl peroxides.

  报道了使用烷基甲硅烷基过氧化物作为烷基化剂的伯酰胺或芳基胺的铜催化的选择性单-N-烷基化。该反应在温和的反应条件下进行，并且相对于烷基甲硅烷基过氧化物以及伯酰胺和芳基胺表现出广泛的底物范围。机理研究表明，本反应应通过自由基过程进行，该自由基过程包括由烷基甲硅烷基过氧化物产生的烷基。
• Visible-Light-Driven Oxidation of N-Alkylamides to Imides Using Oxone/H2O and Catalytic KBr
  作者：Wenjun Lu、Chong Mei、Yixin Hu

  DOI：10.1055/s-0036-1591575

  日期：2018.8

  Applications in Synthesis Abstract Imides are prepared conveniently by visible-light-driven oxidations of various N-alkylamides under mild conditions. The majority of the reactions proceed efficiently by using Oxone as the oxidant in the presence of a catalytic amount of KBr in H2O/CH2Cl2 under irradiation by an 8 W white LED at room temperature. Experimental studies suggest that an imine, obtained from the substrate

  作为特别主题“现代自由基方法及其在合成中的战略应用”的一部分发布 抽象的 通过在温和条件下可见光驱动的各种N-烷基酰胺的氧化反应可方便地制备酰亚胺。在室温下，在8 W白光LED辐射下，在H 2 O / CH 2 Cl 2中催化量的KBr存在下，使用Oxone作为氧化剂可有效地进行大多数反应。实验研究表明，通过自由基过程从底物酰胺获得的亚胺是关键中间体。 通过在温和条件下可见光驱动的各种N-烷基酰胺的氧化反应可方便地制备酰亚胺。在室温下，在8 W白光LED辐射下，在H 2 O / CH 2 Cl 2中催化量的KBr存在下，使用Oxone作为氧化剂可有效地进行大多数反应。实验研究表明，通过自由基过程从底物酰胺获得的亚胺是关键中间体。
• Potassium Trimethylsilanolate Enables Rapid, Homogeneous Suzuki−Miyaura Cross-Coupling of Boronic Esters
  作者：Connor P. Delaney、Vincent M. Kassel、Scott E. Denmark

  DOI：10.1021/acscatal.9b04353

  日期：2020.1.3

  Herein, a mild and operationally simple method for the Suzuki−Miyaura cross-coupling of boronic esters is described. Central to this advance is the use of the organic-soluble base, potassium trimethylsilanolate, which allows for a homogeneous, anhydrous cross-coupling. The coupling proceeds at a rapid rate, often furnishing products in quantitative yield in less than 5 min. By applying this method

  在此，描述了一种温和且操作简单的硼酸酯的Suzuki-Miyaura交叉偶联方法。这一进步的中心是有机可溶性碱三甲基硅烷醇钾的使用，它可以实现均匀，无水的交叉偶联。偶联以快速的速度进行，通常在不到5分钟的时间内提供定量产量的产品。通过应用该方法，对于三个发表的反应，观察到反应时间减少了> 10倍，这需要> 48小时才能达到令人满意的转化率。
• Fused pyridine derivatives
  申请人：Eisai Co., Ltd.

  公开号：US06340759B1

  公开（公告）日：2002-01-22

  The present provides a condensed pyridine compound (I) represented by the following formula: (wherein, R2 represents ring A represents benzene ring, pyridine ring, thiophene ring or furan ring; and B represents its pharmaceutically acceptable salt or hydrates thereof, which is a clinically useful medicament having a serotonin antagonism, in particular, that for treating, ameliorating or preventing spastic paralysis or central muscle relaxants for ameliorating myotonia.

  目前提供了一种由以下公式表示的缩合吡啶化合物（I）： （其中，R2代表环A代表苯环、吡啶环、噻吩环或呋喃环；B代表其药学上可接受的盐或其水合物，是一种具有血清素拮抗作用的临床上有用的药物，特别用于治疗、改善或预防痉挛性麻痹或改善肌张力过高的中枢肌肉松弛剂。