3-(2-溴苯基)-5-苯基-1,2,4-噁二唑 | 827332-78-5

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 唑类
• 中文名称: 3-(2-溴苯基)-5-苯基-1,2,4-噁二唑
• 中文别名: 3-(2-溴苯基)-5-苯基-1,2,4-恶二唑
• 英文名称: 3-(2-bromophenyl)-5-phenyl-1,2,4-oxadiazole
• CAS: 827332-78-5
• 化学式: C₁₄H₉BrN₂O
• 分子量: 301.142
• InChiKey: YNEFEUXUIWJXNR-UHFFFAOYSA-N

物化性质

• 沸点：
  428.8±47.0 °C(Predicted)
• 密度：
  1.465±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  4.2
• 重原子数：
  18
• 可旋转键数：
  2
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  38.9
• 氢给体数：
  0
• 氢受体数：
  3

安全信息

• 海关编码：
  2934999090

SDS

Material Safety Data Sheet

---

Section 1. Identification of the substance
Product Name: 3-(2-Bromophenyl)-5-phenyl-1,2,4-oxadiazole
Synonyms:

---

Section 2. Hazards identification
Harmful by inhalation, in contact with skin, and if swallowed.

---

Section 3. Composition/information on ingredients.
Ingredient name: 3-(2-Bromophenyl)-5-phenyl-1,2,4-oxadiazole
CAS number: 827332-78-5

---

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.

---

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.

---

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.

---

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.
Storage:

---

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.

---

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: C14H9BrN2O
Molecular weight: 301.1

---

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.

---

Section 11. Toxicological information
No data.

---

Section 12. Ecological information
No data.

---

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.

---

Section 14. Transportation information
Non-harzardous for air and ground transportation.

---

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.

---

SECTION 16 - ADDITIONAL INFORMATION
N/A

反应信息

• 作为产物：
  描述：

  2-溴苯甲醛肟 在 potassium phosphate 、 N-氯代丁二酰亚胺 、 氧气 、 三乙胺 作用下， 以 N,N-二甲基甲酰胺 为溶剂， 60.0 ℃ 、101.33 kPa 条件下， 反应 20.0h， 生成 3-(2-溴苯基)-5-苯基-1,2,4-噁二唑
  参考文献：
  名称：

  Orthogonal aerobic conversion of N-benzyl amidoximes to 1,2,4-oxadiazoles or quinazolinones

  摘要：

  通过在60°C下，在O2气氛中使用K3PO4作为催化剂，将N-苄基脒肟在DMF中加热，实现了1,2,4-噁二唑的简洁合成，这一过程涉及苄基C-H氧合作用。另一方面，在100°C下，使用Cs2CO3作为催化剂，在DMSO中对N-苄基脒脟进行需氧处理，可能导致骨架氧化重排，主要产物为喹唑啉酮。这种正交的产品选择性可以通过反应温度、溶剂和无机碱的选择来实现。

  DOI：

  10.1039/c3ob41393d

文献信息

• Copper-Catalyzed Direct Synthesis of 1,2,4-Oxadiazoles from Amides and Organic Nitriles by Oxidative N-O Bond Formation
  作者：Malleswara Rao Kuram、Woo Gyum Kim、Kyungjae Myung、Sung You Hong

  DOI：10.1002/ejoc.201501502

  日期：2016.1

  Cu-catalyzed one-step method for the synthesis of 1,2,4-oxadiazoles from stable, less toxic, and readily available amides and organic nitriles by a rare oxidative N–O bond formation using O2 as sole oxidant. This method has a broad substrate scope and a good tolerance for diverse functional groups. Moreover, the synthetic utility of this method is highlighted by the synthesis of biologically active 3,5-disubstituted

  在此，我们报告了第一个 Cu 催化一步法，通过使用 O2 作为唯一的稀有氧化 N-O 键，从稳定、毒性较低且易于获得的酰胺和有机腈合成 1,2,4-恶二唑。氧化剂。该方法具有广泛的底物范围和对不同官能团的良好耐受性。此外，该方法的合成效用通过具有生物活性的 3,5-二取代衍生物的合成而突出。
• Electrochemical synthesis of 1,2,4-oxadiazoles from amidoximes through dehydrogenative cyclization
  作者：Chan Jiang、Mingfang Li、Leitao Xu、Yangjie Yi、Jiao Ye、Aixi Hu

  DOI：10.1039/d1ob02040d

  日期：——

  through anodic oxidation was developed for the synthesis of 3,5-disubstituted 1,2,4-oxadiazoles from N-benzyl amidoximes. The transformation proceeds through 1.5-Hydrogen Atom Transfer (1,5-HAT) and intramolecular cyclization. The process features simple operation, mild conditions, broad substrate scope and high functional group compatibility, and provides a facile and practical way for the preparation of

  为从N-苄基偕胺肟合成 3,5-二取代的 1,2,4-恶二唑，开发了一种通过阳极氧化生成亚胺氧基自由基的简便有效的方法。转化通过 1.5-氢原子转移 (1,5-HAT) 和分子内环化进行。该工艺操作简单、条件温和、底物范围广、官能团相容性高，为1,2,4-恶二唑的制备提供了一条简便实用的途径。