1-苄基-2,5-二甲基吡咯 | 5044-20-2

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 吡咯
• 中文名称: 1-苄基-2,5-二甲基吡咯
• 英文名称: 1-benzyl-2,5-dimethyl-1H-pyrrole
• 英文别名: N-benzyl-2,5-dimethylpyrrole；1-benzyl-2,5-dimethylpyrrole；2,5-dimethyl-N-benzylpyrrole
• CAS: 5044-20-2
• 化学式: C₁₃H₁₅N
• mdl: MFCD00102577
• 分子量: 185.269
• InChiKey: RNXMFQXZASNQHV-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.1
• 重原子数：
  14
• 可旋转键数：
  2
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.23
• 拓扑面积：
  4.9
• 氢给体数：
  0
• 氢受体数：
  0

安全信息

• 海关编码：
  2933990090

SDS

Material Safety Data Sheet

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Section 1. Identification of the substance
Product Name: 1-Benzyl-2,5-dimethylpyrrole
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: 1-Benzyl-2,5-dimethylpyrrole
CAS number: 5044-20-2

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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, refrigerated.
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: C13H15N
Molecular weight: 185.3

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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：

  1-苄基-2,5-二甲基吡咯 在 盐酸 作用下， 以 乙醇 为溶剂， 反应 0.17h， 以76%的产率得到苄胺
  参考文献：
  名称：

  2,5-二甲基吡咯类伯胺的微波辅助保护及其正交脱保护

  摘要：

  伯胺可以很容易地被双重保护为N-取代的 2,5-二甲基吡咯。尽管该保护基团对强碱和亲核试剂稳定，但保护和脱保护步骤都需要较长的反应时间，通常导致脱保护产率低。通过使用微波辐射，保护和脱保护反应时间显着减少。此外，用乙醇中的稀盐酸脱保护可提高反应产率。结合微波辐射开发了多种脱保护条件，因此作为N-取代的 2,5-二甲基吡咯的保护可以与其他标准胺保护基团正交，例如叔-丁氧基羰基 (Boc)、苄氧基 (Cbz) 和 9-芴基甲氧基羰基 (Fmoc)。

  DOI：

  10.1021/jo401778e
• 作为产物：
  描述：

  1,2,5-三甲基吡咯 在 indium(III) tris[bis(trifluoromethanesulfonyl)amide] 、 ammonium acetate 作用下， 以 1,4-二氧六环 为溶剂， 反应 78.0h， 生成 1-苄基-2,5-二甲基吡咯
  参考文献：
  名称：

  吡咯与胺的铟催化形式N-芳基化和N-烷基化

  摘要：

  在铟路易斯酸催化下，N-未取代吡咯的氮原子被伯胺的氮原子取代，从而产生N-芳基和N-烷基吡咯。这种将碳骨架正式引入吡咯氮原子的系统显示出独特的选择性：即使在类似的H-N（吲哚基）部分共存时，只有H-N（吡咯基）单元也会经历N-芳基化和N-烷基化。并且芳基-卤素键保持完整。这些明显不同于典型的方法，这取决于以有机卤化物为底物的CN（吡咯基）键形成反应。从吡咯N-保护-脱保护化学的观点来看，值得注意的是，吡咯氮原子上的甲基可以被除去，尽管是正式的方式。

  DOI：

  10.1002/adsc.201600656

文献信息

• Pyrrole and Pyrazole Ring Closure in Heterogeneous Media
  作者：F. Texier-Boullet、B. Klein、J. Hamelin

  DOI：10.1055/s-1986-31655

  日期：——

  Pyrroles and pyrazoles may be conveniently prepared by dispersing primary amines or hydrazines and 1,4- or 1,3-diketones, respectively, on alumina or clay (montmorillonite K 10) without solvent, keeping the mixture at 20°C or higher temperatures for 1-26 h, and then eluting the product with dichloromethane.

  吡咯和吡唑可以通过将伯胺或肼以及1,4-或1,3-二酮分别分散在氧化铝或粘土（蒙脱石K 10）上，无需溶剂，在20°C或更高温度下保持混合物1至26小时，然后用二氯甲烷洗脱产物来方便地制备。
• One-pot Tandem Reactions for Direct Conversion of Thiols and Disulfides to Sulfonic Esters, Alcohols to Bis(indolyl)methanes and Synthesis of Pyrroles Catalyzed by N-Chloro Reagents
  作者：Hojat Veisi、Meral Ataee、Leila Fatolahi、Shahram Lotfi

  DOI：10.2174/1570178611310020008

  日期：2013.4.1

  convenient synthesis of sulfonic esters from thiols and disulfides has been described. In situ preparation of sulfonyl chlorides from thiols is accomplished by oxidation with Chloramin-T, tetra-butylammonium chloride (t-Bu4NCl) and water. The sulfonyl chlorides are then further allowed to react with phenol derivatives in the same reaction vessel. Also, a facile synthesis of bis(indolyl)methanes from alcohols

  已经描述了由硫醇和二硫化物方便地合成磺酸酯的方法。由硫醇原位制备磺酰氯的方法是用氯丁宁-T，氯化四丁基铵（t-Bu 4 NCl）和水氧化。然后使磺酰氯在同一反应容器中与苯酚衍生物反应。同样，在温和的条件下，使用TCCA / KBr / wet-SiO 2和N-取代的吡咯通过TCCA / KBr / wet-SiO 2从醇中轻松合成双（吲哚基）甲烷已在温和条件下以优异的收率完成。
• One-pot tandem reactions for direct conversion of thiols and disulfides to sulfonic esters, and Paal–Knorr synthesis of pyrrole derivatives catalyzed by TCCA
  作者：Saba Hemmati、Mohammad Majid Mojtahedi、Mohammad Saeed Abaee、Zahra Vafajoo、Shokufe Ghahri Saremi、Mohammad Noroozi、Alireza Sedrpoushan、Meral Ataee

  DOI：10.1080/17415993.2012.744410

  日期：2013.8.1

  thiols is accomplished by oxidation with trichloroisocyanuric acid (TCCA), tetra-butylammonium chloride (t-Bu4NCl), and water. The sulfonyl chlorides are then further allowed to react with phenol derivatives in the same reaction vessel. Also, a facile synthesis of N-substituted pyrroles by the reaction of hexane-2,5-dione with primary amines has been accomplished using TCCA as a catalyst under mild condition

  描述了从硫醇和二硫化物方便地合成磺酸酯。从硫醇原位制备磺酰氯是通过用三氯异氰尿酸 (TCCA)、四丁基氯化铵 (t-Bu4NCl) 和水氧化来完成的。然后使磺酰氯在同一反应容器中进一步与苯酚衍生物反应。此外，使用 TCCA 作为催化剂，在温和的条件下，通过己烷-2,5-二酮与伯胺反应，以优异的产率轻松合成了 N-取代的吡咯。
• Hexafluoroisopropanol as solvent and promotor in the Paal-Knorr synthesis of N-substituted diaryl pyrroles
  作者：Robert H.E. Schirmacher、Daniel Rösch、Franziska Thomas

  DOI：10.1016/j.tet.2021.131985

  日期：2021.3

  An additive-free synthesis of challenging N-substituted aryl pyrroles from the often poorly soluble corresponding 1,4-diketones by means of the Paal-Knorr pyrrole synthesis is reported, which makes use of the unique properties of 1,1,1,3,3,3-hexafluoroisopropanol (HFIP) as a solvent and reaction promotor. Our procedure offers simple execution and purification as well as easy scale-up and can be applied

  据报道，通过Paal-Knorr吡咯合成方法，由通常难溶的相应1,4-二酮可无添​​加剂合成具有挑战性的N-取代的芳基吡咯，该方法利用了1,1,1,3的独特性质，3,3-六氟异丙醇（HFIP）作为溶剂和反应促进剂。我们的程序提供了简单的执行和纯化方法，以及易于放大的规模，可用于Paal-Knorr合成中，结构复杂的许多吡咯，包括中等难度到极高产率的具有挑战性的四和五取代的吡咯。HFIP也可以用作呋喃和噻吩的Paal-Knorr合成中的溶剂。然而，在吡咯的合成中，溶剂作用更为明显。
• Hexaalkylguanidinium salts as ionic liquids – applications in titanium and aluminium alcoholate assisted synthesis
  作者：Maria Arkhipova、Svetlana Eichel、Gerhard Maas

  DOI：10.1039/c4ra09567g

  日期：——

  hexaalkylguanidinium-based room temperature ionic liquids was screened. The solvent/solute combinations which displayed the highest alcoholate solubility and stability were applied as Lewis-acidic catalytic media for several dehydrating cyclocondensations: lactamisation of ω-aminocarboxylic acids, direct amidation of carboxylic acids, synthesis of oxazolines from carboxylic acids and 2-aminoethanol, lactonisation

  筛选了钛和铝的醇化物和四（三甲基硅醇化物）钛在几种基于六烷基胍的室温离子液体中的溶解度。具有最高醇盐溶解度和稳定性的溶剂/溶质组合物被用作路易斯酸催化介质，用于几种脱水环缩合：ω-氨基羧酸的内酰胺化，羧酸的直接酰胺化，由羧酸和2-氨基乙醇合成恶唑啉， 6-羟基己酸的内酯化和吡咯的Paal-Knorr合成。