2-(4-氯苯基)-1,3,4-噁二唑 | 23289-10-3

• 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: 2-(4-氯苯基)-1,3,4-噁二唑
• 中文别名: 2-(4-氯代-苯基)-[1,3,4]恶二唑
• 英文名称: 2-(4-chlorophenyl)-1,3,4-oxadiazole
• CAS: 23289-10-3
• 化学式: C₈H₅ClN₂O
• mdl: MFCD08361748
• 分子量: 180.593
• InChiKey: AYUDXVQMLKGODN-UHFFFAOYSA-N

物化性质

• 熔点：
  127.1-128.4 °C
• 沸点：
  284.0±42.0 °C(Predicted)
• 密度：
  1.328±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2
• 重原子数：
  12
• 可旋转键数：
  1
• 环数：
  2.0
• 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

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Section 1. Identification of the substance
Product Name: 2-(4-Chlorophenyl)-1,3,4-oxadiazole
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: 2-(4-Chlorophenyl)-1,3,4-oxadiazole
CAS number: 23289-10-3

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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: C8H5ClN2O
Molecular weight: 180.6

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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 chloride.

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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：

  2-(4-氯苯基)-1,3,4-噁二唑 在 sodium t-butanolate 作用下， 以 N,N-二甲基甲酰胺 为溶剂， 反应 4.0h， 以98%的产率得到对氯苯甲腈
  参考文献：
  名称：

  A Base-Induced Ring-Opening Process of 2-Substituted-1,3,4-Oxadiazoles for the Generation of Nitriles at Room Temperature

  摘要：

  A novel base-catalysed 1,3,4-oxadiazole fragmentation for the synthesis of nitriles at room temperature has been developed. This reaction is performed under transition-metal-free conditions, and provides a new ring cleavage reaction of 1,3,4-oxadiazoles in organic synthesis.

  DOI：

  10.3184/174751914x14007780679741
• 作为产物：
  描述：

  对氯苯甲酸甲酯 在 一水合肼 作用下， 以 乙醇 为溶剂， 反应 18.0h， 生成 2-(4-氯苯基)-1,3,4-噁二唑
  参考文献：
  名称：

  Transition metal-free direct C–H bond thiolation of 1,3,4-oxadiazoles and related heteroarenes

  摘要：

  开发了一种便捷的无过渡金属催化方法，利用二芳基二硫醚直接对1,3,4-噁二唑C-H键进行硫醇化。该方法同样适用于吲哚、苯并噻唑、N-苯基苯并咪唑及咖啡因等多种底物，能以良好至优异的产率得到相应的硫醇化产物。

  DOI：

  10.1039/c2cc36711d

文献信息

• Iodine-Mediated Domino Oxidative Cyclization: One-Pot Synthesis of 1,3,4-Oxadiazoles via Oxidative Cleavage of C(sp²)–H or C(sp)–H Bond
  作者：Yuxing Fan、Yongqin He、Xingxing Liu、Ting Hu、Haojie Ma、Xiaodong Yang、Xinliang Luo、Guosheng Huang

  DOI：10.1021/acs.joc.6b01135

  日期：2016.8.5

  An I2-promoted, metal-free domino protocol for one-pot synthesis of 1,3,4-oxadiazoles has been developed via oxidative cleavage of C(sp2)–H or C(sp)–H bonds, followed by cyclization and deacylation. In this reaction, the use of K2CO3 as a base is found to be an essential factor in the cyclization and the C–C bond cleavage. This procedure proceeded smoothly in moderate to high yields with good functional

  通过氧化裂解C（sp 2）–H或C（sp）–H键，然后环化，已开发出I 2促进的无金属多米诺协议，用于一锅合成1,3,4-恶二唑。和脱酰作用。在该反应中，发现使用K 2 CO 3作为碱是环化和C–C键断裂的必要因素。该过程以中等至高收率顺利进行，并具有良好的官能团相容性。
• Direct Annulation of Hydrazides to 1,3,4-Oxadiazoles via Oxidative C(CO)–C(Methyl) Bond Cleavage of Methyl Ketones
  作者：Qinghe Gao、Shan Liu、Xia Wu、Jingjing Zhang、Anxin Wu

  DOI：10.1021/acs.orglett.5b01241

  日期：2015.6.19

  strategy for the synthesis of 1,3,4-oxadiazoles was established through direct annulation of hydrazides with methyl ketones. It was found that the use of K2CO3 as a base achieves an unexpected and highly efficient C–C bond cleavage. This reaction is proposed to go through oxidative cleavage of Csp3–H bonds, followed by cyclization and deacylation.

  通过将酰肼与甲基酮直接环合，建立了一种合成1,3,4-恶二唑的新策略。发现使用K 2 CO 3作为碱可以实现意想不到且高效的C–C键裂解。建议该反应通过C sp 3 -H键的氧化裂解，然后环化和脱酰基。
• DMF as Methine Source: Copper‐Catalyzed Direct Annulation of Hydrazides to 1,3,4‐Oxadiazoles
  作者：Shoucai Wang、Kai Wang、Xiangfei Kong、Shuhua Zhang、Guangbin Jiang、Fanghua Ji

  DOI：10.1002/adsc.201900395

  日期：2019.9.3

  unprecedented Cu‐catalyzed direct annulation of hydrazides with N,N‐dimethylformamide (DMF) was developed, providing an efficient synthesis of valuable 1,3,4‐oxadiazoles. This process features the short reaction time and can be safely conducted on gram scale. The reaction also facilitated the convenient synthesis of 1,3,4‐oxadiazole‐2(3H)‐ones. Moreover, the mechanistic studies suggest that the source of CH is

  开发了前所未有的Cu催化的N，N-二甲基甲酰胺（DMF）酰肼直接环化反应，可有效合成有价值的1,3,4-恶二唑。该过程的反应时间短，可以安全地以克为单位进行。该反应还促进了1,3,4-恶二唑-2（3 H）-one的便捷合成。此外，机理研究表明，CH的来源是DMF的N-甲基。
• 一种2-芳基-5-芳硒基-1，3，4-噁二唑化合物 及制备方法
  申请人：温州医科大学

  公开号：CN107056727B

  公开（公告）日：2020-12-11

  本发明涉及一种2‑芳基‑5‑芳硒基‑1，3，4‑噁二唑化合物及制备方法，在有机溶剂中，以2‑芳基‑1，3，4‑噁二唑与芳基碘化物为反应原料，以单质硒为硒基化试剂，在铜催化剂和碱的共同促进作用下，通过串联反应得到2‑芳基‑5‑芳硒基‑1，3，4‑噁二唑化合物。所述方法底物范围广泛、反应条件简单、产物的产率和纯度高，为2‑芳基‑5‑芳硒基‑1，3，4‑噁二唑化合物开拓了新的合成路线和方法，具有良好的应用潜力和研究价值。
• Functionalization of 1,3,4-Oxadiazoles and 1,2,4-Triazoles via Selective Zincation or Magnesiation Using 2,2,6,6-Tetramethylpiperidyl Bases
  作者：Kuno Schwärzer、Carl Phillip Tüllmann、Simon Graßl、Bartosz Górski、Cara E. Brocklehurst、Paul Knochel

  DOI：10.1021/acs.orglett.0c00238

  日期：2020.3.6

  We report the metalation of the 1,3,4-oxadiazole and 1,2,4-triazole scaffolds via regioselective zincation or magnesiation using the TMP bases (TMP = 2,2,6,6-tetramethylpiperidyl) TMP2Zn·2LiCl, TMP2Zn·2MgCl2·2LiCl, TMPMgCl·LiCl, and TMPZnCl·LiCl under mild conditions in THF. Subsequent trapping with various electrophiles including hydroxylamino benzoates gives access to functionalized heterocycles

  我们报告通过使用TMP碱（TMP = 2,2,6,6-四甲基哌啶基）的区域选择性镀锌或镁化，将1,3,4-恶二唑和1,2,4-三唑支架金属化TMP2Zn·2LiCl，TMP2Zn· 2MgCl2·2LiCl，TMPMgCl·LiCl和TMPZnCl·LiCl在THF中温和条件下。随后用各种亲电子试剂（包括羟氨基苯甲酸酯）进行捕集可进入官能化的杂环，同时可耐受许多官能团。