5-溴-2-甲基苯并恶唑 | 5676-56-2

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 苯并恶唑类
• 中文名称: 5-溴-2-甲基苯并恶唑
• 中文别名: 5-溴-2-甲基苯并[D]恶唑；5-溴-2-甲基苯并噁唑；2-甲基-5-溴苯并噁唑
• 英文名称: 5-bromo-2-methylbenzo[d]oxazole
• 英文别名: 5-bromo-2-methylbenzoxazole；5-bromo-2-methyl-1,3-benzoxazole
• CAS: 5676-56-2
• 化学式: C₈H₆BrNO
• 分子量: 212.046
• InChiKey: ZBCCSPFGJDVVJB-UHFFFAOYSA-N

物化性质

• 熔点：
  66-68°
• 沸点：
  264.8±13.0 °C(Predicted)
• 密度：
  1.606±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.9
• 重原子数：
  11
• 可旋转键数：
  0
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.12
• 拓扑面积：
  26
• 氢给体数：
  0
• 氢受体数：
  2

安全信息

• 危险等级：
  IRRITANT
• 海关编码：
  2934999090
• WGK Germany：
  3
• 危险性防范说明：
  P261,P305+P351+P338
• 危险性描述：
  H315,H319,H335
• 储存条件：
  应存放在室温、密封、干燥的环境中。

SDS

Material Safety Data Sheet

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Section 1. Identification of the substance
Product Name: 5-Bromo-2-methylbenzooxazole
Synonyms: 5-Bromo-2-methylbenzo[d]oxazole

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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: 5-Bromo-2-methylbenzooxazole
CAS number: 5676-56-2

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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: C8H6BrNO
Molecular weight: 212.0

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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, 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：

  5-溴-2-甲基苯并恶唑 在 tris-(dibenzylideneacetone)dipalladium(0) 、 potassium tert-butylate 、 R-(+)-1,1'-联萘-2,2'-双二苯膦 、 sodium t-butanolate 作用下， 以 四氢呋喃 、 甲苯 、 叔丁醇 为溶剂， 反应 12.5h， 生成 (E)-2-(2-(2,5-dimethyl-1-phenyl-1H-pyrrol-3-yl)vinyl)-N-(2-methoxyethyl)benzo[d]oxazol-5-amine
  参考文献：
  名称：

  [EN] ANDROGEN RECEPTOR ANTAGONISTS
  [FR] ANTAGONISTES DU RÉCEPTEUR DES ANDROGÈNES

  摘要：

  描述了抑制雄激素受体的化合物、包含一种或多种这些化合物的药物组合物，以及使用这些化合物治疗癌症的方法。

  公开号：

  WO2019152731A1
• 作为产物：
  描述：

  2-甲基苯并唑 在 溴 作用下， 以 四氯化碳 为溶剂， 反应 2.0h， 生成 5-溴-2-甲基苯并恶唑
  参考文献：
  名称：

  Synthesis of benzoxazoles and their activity against nippostrongyliasis in mice

  摘要：

  DOI：

  10.1007/bf00760001

文献信息

• A Monophosphine Ligand Derived from Anthracene Photodimer: Synthetic Applications for Palladium-Catalyzed Coupling Reactions
  作者：Xin Wang、Wei-Gang Liu、Chen-Ho Tung、Li-Zhu Wu、Huan Cong

  DOI：10.1021/acs.orglett.9b02414

  日期：2019.10.18

  an air-stable dianthracenyl monophosphine ligand (diAnthPhos) which can be prepared in two steps from commercially available anthracene derivatives. The ligand exhibits excellent efficiency for palladium-catalyzed coupling reactions. In particular, Miyaura borylation of heterocycle-containing electrophiles can be facilitated employing the diAnthPhos ligand with a broad substrate scope and low catalyst

  在这里，我们提出了一种空气稳定的二蒽基单膦配体（diAnthPhos），它可以由市售的蒽衍生物分两步制备。该配体对于钯催化的偶联反应表现出优异的效率。特别地，使用具有宽底物范围和低催化剂负载的diAnthPhos配体可以促进含杂环亲电试剂的宫浦硼化。通过对含杂芳基的底物进行一锅Miyaura硼化/ Suzuki偶联方案，进一步证明了新配体的宝贵合成效用。
• Mild Palladium-Catalyzed Cyanation of (Hetero)aryl Halides and Triflates in Aqueous Media
  作者：Daniel T. Cohen、Stephen L. Buchwald

  DOI：10.1021/ol5032359

  日期：2015.1.16

  A mild, efficient, and low-temperature palladium-catalyzed cyanation of (hetero)aryl halides and triflates is reported. Previous palladium-catalyzed cyanations of (hetero)aryl halides have required higher temperatures to achieve good catalytic activity. This current reaction allows the cyanation of a general scope of (hetero)aryl halides and triflates at 2–5 mol % catalyst loadings with temperatures

  据报道，轻度，有效和低温钯催化的（杂）芳基卤化物和三氟甲磺酸酯的氰化反应。先前钯催化的（杂）芳基卤化物的氰化需要更高的温度以实现良好的催化活性。该当前反应可以使一般范围的（杂）芳基卤化物和三氟甲磺酸酯在催化剂负载量为2％至5％的条件下从rt到40°C进行氰化。这种温和的方法适用于逆转录酶抑制剂lersivirine的合成。
• One‐Pot Synthesis of Diazirines and ¹⁵ N ₂ ‐Diazirines from Ketones, Aldehydes and Derivatives: Development and Mechanistic Insight
  作者：Quentin Ibert、Madeleine Cauwel、Thomas Glachet、Tony Tite、Patricia Le Nahenec‐Martel、Jean‐François Lohier、Pierre‐Yves Renard、Xavier Franck、Vincent Reboul、Cyrille Sabot

  DOI：10.1002/adsc.202100679

  日期：2021.9.21

  Broad scope one-pot diazirine synthesis strategies have been developed using two different oxidants depending on the nature of the starting material. In all cases, an inexpensive commercial solution of ammonia (NH3) in methanol (MeOH) was employed, avoiding the difficult use of liquid ammonia. With aliphatic ketones, t-butyl hypochlorite (t-BuOCl) was found to be the best oxidant whereas it is preferable

  根据起始材料的性质，使用两种不同的氧化剂开发了广泛的一锅二氮嗪合成策略。在所有情况下，均采用廉价的商业氨 (NH 3 ) 甲醇 (MeOH) 溶液，避免了使用液氨的困难。对于脂肪族酮，发现次氯酸叔丁酯 ( t- BuOCl) 是最好的氧化剂，而最好使用带有芳香族酮、醛和亚胺的二乙酸苯碘酯 (PIDA)。亚胺保护基团的性质是必不可少的，只有叔丁基亚胺允许合成15 N 2 -二氮杂环和完整的15N 掺入，强调反应机制中的关键转亚胺化步骤。这些方法操作简单，对大多数官能团都具有耐受性，提供了产率在 20% 到 99% 之间的二氮嗪。
• Photo-induced Decarboxylative Heck-Type Coupling of Unactivated Aliphatic Acids and Terminal Alkenes in the Absence of Sacrificial Hydrogen Acceptors
  作者：Hui Cao、Heming Jiang、Hongyu Feng、Jeric Mun Chung Kwan、Xiaogang Liu、Jie Wu

  DOI：10.1021/jacs.8b11218

  日期：2018.11.28

  boronates are among the most versatile building blocks that can be found in every sector of chemical science. We herein report a noble-metal-free method of accessing such olefins through a photo-induced decarboxylative Heck-type coupling using alkyl carboxylic acids, one of the most ubiquitous building blocks, as the feedstocks. This transformation was achieved in the absence of external oxidants through

  1,2-二取代的烯烃，如乙烯基芳烃、乙烯基硅烷和乙烯基硼酸酯，是化学科学各个领域中最通用的结构单元。我们在此报告了一种无贵金属的方法，该方法使用烷基羧酸（最普遍的结构单元之一）作为原料，通过光诱导脱羧 Heck 型偶联获得此类烯烃。这种转变是在没有外部氧化剂的情况下通过有机光氧化还原催化剂和钴肟催化剂的协同组合实现的，H2 和 CO2 作为唯一的副产物。控制实验和 DFT 计算都支持基于自由基的机制，最终导致开发出脂肪族羧酸、丙烯酸酯和乙烯基芳烃的选择性三组分偶联。
• Inhibitors of CYP 17
  申请人：BOCK Mark G.

  公开号：US20100331326A1

  公开（公告）日：2010-12-30

  The present invention provides compounds of Formula (I) and (II), or a pharmaceutically acceptable salts thereof, where R 53 , R 54 , p, q, and n are as defined herein. The compounds of the present invention have been found to be useful as 17α-hydroxylase/C 17,20 -lyase inhibitors.

  本发明提供了式(I)和(II)的化合物，或其药用可接受的盐， 其中R 53 ，R 54 ，p，q和n如本文所述定义。本发明的化合物被发现作为17α-羟化酶/C 17,20 -裂解酶抑制剂是有用的。