1-methyl-2,4-bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrrole | 1278579-60-4

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 吡咯
• 英文名称: 1-methyl-2,4-bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrrole
• 英文别名: 2,4-di(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1-methyl-pyrrole；1-methyl-2,4-bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyrrole
• CAS: 1278579-60-4
• 化学式: C₁₇H₂₉B₂NO₄
• 分子量: 333.044
• InChiKey: IJBHSWGFCDPVPD-UHFFFAOYSA-N

物化性质

• 沸点：
  442.4±30.0 °C(Predicted)
• 密度：
  1.03±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  1.62
• 重原子数：
  24
• 可旋转键数：
  2
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.76
• 拓扑面积：
  41.8
• 氢给体数：
  0
• 氢受体数：
  4

安全信息

• 海关编码：
  2934999090

SDS

Material Safety Data Sheet

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Section 1. Identification of the substance
Product Name: 1-Methyl-1H-pyrrole-2,4-diboronic acid, pinacol ester
Synonyms: 1-Methyl-2,4-bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrrole

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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-Methyl-1H-pyrrole-2,4-diboronic acid, pinacol ester
CAS number: 1278579-60-4

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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.
Store in closed vessels, under −20◦C.
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: C17H29B2NO4
Molecular weight: 333.0

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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

• 作为产物：
  描述：

  N-甲基吡咯 在 aluminum (III) chloride 、 三乙胺 作用下， 以 二氯甲烷 为溶剂， 反应 121.0h， 生成 1-methyl-2,4-bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrrole
  参考文献：
  名称：

  通过与硼阳离子的直接芳烃硼化反应制得频哪醇硼酸酯

  摘要：

  硼直接作用：Friedel-Crafts反应的硼类似物使用廉价的儿茶酚硼阳离子，该阳离子具有足够的亲电性，可以通过亲电芳香族取代反应生成芳烃。直接芳烃硼化反应对一系列苯胺，N-杂环和噻吩具有很高的区域选择性。随后的一锅酯交换反应可提供合成上有用的频哪醇硼酸酯（请参阅方案）。

  DOI：

  10.1002/anie.201006196

文献信息

• [EN] PROCESS FOR THE BORYLATION OF ARENES AND HETEROARYLS<br/>[FR] PROCÉDÉ DE BORYLATION D'ARÈNES ET D'HÉTÉROARYLES
  申请人：UNIV MANCHESTER

  公开号：WO2012025760A1

  公开（公告）日：2012-03-01

  This invention relates to a novel process for the borylation of arenes and heteroaryls. The present invention also provides novel borenium cations, which act as electrophiles for electrophilic substitution on the arene or heteroaryl ring, as well as to methodology for the preparation of these cations.

  这项发明涉及一种新型芳烃和杂环芳烃硼化的过程。本发明还提供了新型硼离子阳，它们作为芳烃或杂环芳烃环上亲电取代的亲电试剂，以及用于制备这些阳离子的方法学。
• Isodesmic C–H Borylation: Perspectives and Proof of Concept of Transfer Borylation Catalysis
  作者：Étienne Rochette、Vincent Desrosiers、Yashar Soltani、Frédéric-Georges Fontaine

  DOI：10.1021/jacs.9b04305

  日期：2019.8.7

  The potential advantages of using arylboronic esters as boron sources in C-H borylation are discussed. The concept is showcased using commercially available 2-mercaptopyridine as a metal-free catalyst for the transfer borylation of heteroarenes using arylboronates as borylation agents. The catalysis shows a unique functional group tolerance among C-H borylation reactions, tolerating notably terminal alkene and alkyne functional groups. The mechanistic investigation is also described.
• Pinacol Boronates by Direct Arene Borylation with Borenium Cations
  作者：Alessandro Del Grosso、Paul J. Singleton、Christopher A. Muryn、Michael J. Ingleson

  DOI：10.1002/anie.201006196

  日期：2011.2.25

  Borenium does it direct: A boron analogue of the Friedel–Crafts reaction uses inexpensive catecholatoborenium cations that are sufficiently electrophilic to borylate arenes by electrophilic aromatic substitution. The direct arene borylation proceeds with high regioselectivity for a range of anilines, N‐heterocycles, and thiophenes. Subsequent one‐pot transesterification provides the synthetically useful

  硼直接作用：Friedel-Crafts反应的硼类似物使用廉价的儿茶酚硼阳离子，该阳离子具有足够的亲电性，可以通过亲电芳香族取代反应生成芳烃。直接芳烃硼化反应对一系列苯胺，N-杂环和噻吩具有很高的区域选择性。随后的一锅酯交换反应可提供合成上有用的频哪醇硼酸酯（请参阅方案）。