2-氯-4-乙炔基吡啶 | 945717-09-9

• 物质功能分类: 医药中间体 - 杂环化合物 - 吡啶类化合物
• 分子结构分类: 有机化合物 - 有机杂环化合物 - 吡啶及其衍生物
• 中文名称: 2-氯-4-乙炔基吡啶
• 英文名称: 2-chloro-4-ethynylpyridine
• CAS: 945717-09-9
• 化学式: C₇H₄ClN
• 分子量: 137.568
• InChiKey: DLEWWBKXDRBGRF-UHFFFAOYSA-N

物化性质

• 沸点：
  223℃
• 密度：
  1.23
• 闪点：
  110℃

计算性质

• 辛醇/水分配系数(LogP)：
  2.1
• 重原子数：
  9
• 可旋转键数：
  1
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  12.9
• 氢给体数：
  0
• 氢受体数：
  1

安全信息

• 危险性防范说明：
  P280,P305+P351+P338
• 危险性描述：
  H302
• 储存条件：
  存储条件为2-8°C，并需保存在惰性气体中。

SDS

Material Safety Data Sheet

---

Section 1. Identification of the substance
Product Name: 2-Chloro-4-ethynylpyridine
Synonyms:

---

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

---

Section 3. Composition/information on ingredients.
Ingredient name: 2-Chloro-4-ethynylpyridine
CAS number: 945717-09-9

---

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, refrigerated.
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: C7H4ClN
Molecular weight: 137.6

---

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.

---

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

制备方法与用途

2-氯-4-乙炔基吡啶可用作有机合成中间体和医药中间体，主要应用于实验室研发和化工医药的生产过程。

反应信息

• 作为反应物：
  描述：

  2-氯-4-乙炔基吡啶 在 [RuHCl(CO)(PPh₃)₃] 作用下， 以 四氢呋喃 、 水 、 甲苯 为溶剂， 反应 16.0h， 生成 potassium (E)-[2-(2-chloropyridin-4-yl)ethenyl]trifluoroborate
  参考文献：
  名称：

  可见光诱导的乙烯基三氟硼酸钾通过光氧化还原催化合成各种三氟甲基化的烯烃。

  摘要：

  已经开发了通过自由基介导的三氟硼酸乙烯基酯的三氟甲基化来容易地合成三氟甲基化的烯烃。Togni的试剂在可见光照射下，在光氧化还原催化剂[Ru（bpy）（3）]（PF（6））（2）的存在下充当CF（3）自由基前体。这种新的光催化方案可适用于多种含有电子多样性取代基和杂芳族化合物的乙烯基硼酸酯。

  DOI：

  10.1039/c3cc39235j
• 作为产物：
  描述：

  2-chloro-4-((trimethylsilyl)ethynyl)pyridine 在 potassium fluoride 、 18-冠醚-6 作用下， 以 二氯甲烷 为溶剂， 反应 5.0h， 以33%的产率得到2-氯-4-乙炔基吡啶
  参考文献：
  名称：

  可见光诱导的乙烯基三氟硼酸钾通过光氧化还原催化合成各种三氟甲基化的烯烃。

  摘要：

  已经开发了通过自由基介导的三氟硼酸乙烯基酯的三氟甲基化来容易地合成三氟甲基化的烯烃。Togni的试剂在可见光照射下，在光氧化还原催化剂[Ru（bpy）（3）]（PF（6））（2）的存在下充当CF（3）自由基前体。这种新的光催化方案可适用于多种含有电子多样性取代基和杂芳族化合物的乙烯基硼酸酯。

  DOI：

  10.1039/c3cc39235j

文献信息

• [EN] PYRAZOLE DERIVATIVES<br/>[FR] DÉRIVÉS DE PYRAZOLE
  申请人：HUA MEDICINE (SHANGHAI) LTD

  公开号：WO2017117708A1

  公开（公告）日：2017-07-13

  Provided herein are compounds of the formula I: as well as pharmaceutically acceptable salts thereof, wherein the substituents are as those disclosed in the specification. These compounds, and the pharmaceutical compositions containing them, are useful for the treatment or prevention of mGluR5 mediated disorders, such as acute and/or chronic neurological disorders, cognitive disorders and memory deficits, as well as acute and chronic pain.

  本文提供了公式I的化合物，以及其药学上可接受的盐，其中取代基如规范中所披露的那样。这些化合物及含有它们的药物组合物对于治疗或预防mGluR5介导的疾病非常有用，例如急性和/或慢性神经系统疾病、认知障碍和记忆缺陷，以及急性和慢性疼痛。
• PYRAZOLIDIN-3-ONE DERIVATIVES
  申请人：Jaeschke Georg

  公开号：US20120277243A1

  公开（公告）日：2012-11-01

  The present invention relates to ethynyl derivatives of formula I wherein G, X, R 1 , R 2 , R 3 , R 3′ , R 4 , and R 4′ are as defined herein or to a pharmaceutically acceptable acid addition salt, to a racemic mixture, or to its corresponding enantiomer and/or optical isomer and/or stereoisomer thereof. Compounds of formula I are positive allosteric modulators (PAM) of the metabotropic glutamate receptor subtype 5 (mGluR5).

  本发明涉及公式I的乙炔衍生物，其中G、X、R1、R2、R3、R3'、R4和R4'如本文所定义，或者涉及其药学上可接受的酸盐加合物，或者涉及其相应的外消旋体和/或光学异构体和/或立体异构体。公式I的化合物是代谢型谷氨酸受体亚型5（mGluR5）的正向变构调节剂（PAM）。
• [EN] PYRAZOLIDIN-3-ONE DERIVATIVES<br/>[FR] DÉRIVÉS DE PYRAZOLIDINE-3-ONE
  申请人：HOFFMANN LA ROCHE

  公开号：WO2012146552A1

  公开（公告）日：2012-11-01

  The present invention relates to ethynyl derivatives of formula I wherein X is N or CH; G is N or CH; with the proviso that maximum one of X or G can be nitrogen; R1 is phenyl or pyridyl, which are optionally substituted by halogen, lower alkyl or lower alkoxy; R2 is hydrogen, lower alkyl or may form together with R 4 a C3-C6-cycloalkyl; R3/R3'/R4/R4' are independently from each other hydrogen, lower alkyl or CF3; or to a pharmaceutically acceptable acid addition salt, to a racemic mixture, or to its corresponding enantiomer and/or optical isomer and/or stereoisomer thereof. It has now surprisingly been found that the compounds of general formula I are positive allosteric modulators (PAM) of the metabotropic glutamate receptor subtype 5 (mGluR5).

  本发明涉及公式I的乙炔衍生物，其中X为N或CH；G为N或CH；但X或G中最多只能有一个是氮；R1为苯基或吡啶基，可以选择地被卤素、较低烷基或较低烷氧基取代；R2为氢、较低烷基或可能与R4一起形成C3-C6环烷基；R3/R3'/R4/R4'彼此独立地为氢、较低烷基或CF3；或者是其对应的药学上可接受的酸盐、消旋混合物，或其相应的对映体和/或光学异构体和/或立体异构体。令人惊讶地发现，一般公式I化合物是代谢型谷氨酸受体亚型5（mGluR5）的正向变构调节剂（PAM）。
• Heteroaryl and benzyl amide compounds
  申请人：Conte Aurelia

  公开号：US20070185058A1

  公开（公告）日：2007-08-09

  Compounds of formula I wherein R 1 , R 2 , R 4 , R 5 , A, B, D and n are as defined, and pharmaceutically acceptable salts thereof, processes for their preparation, their use as pharmaceuticals and pharmaceutical compositions comprising them.

  式I中的化合物，其中R1、R2、R4、R5、A、B、D和n的定义如上，并其药用盐，其制备方法，它们作为药物的用途以及包含它们的药物组合物。
• Synthesis, Structure–Activity Relationships, and In Vivo Evaluation of Novel Tetrahydropyran-Based Thiodisaccharide Mimics as Galectin-3 Inhibitors
  作者：Li Xu、Richard A. Hartz、Brett R. Beno、Kaushik Ghosh、Jinal K. Shukla、Amit Kumar、Dipal Patel、Narasimharaju Kalidindi、Nadine Lemos、Shashyendra Singh Gautam、Anoop Kumar、Bruce A. Ellsworth、Devang Shah、Harinath Sale、Dong Cheng、Alicia Regueiro-Ren

  DOI：10.1021/acs.jmedchem.0c02001

  日期：2021.5.27

  or galactose-based derivatives, have the potential to be valuable disease-modifying agents. In our efforts to identify novel galectin-3 disaccharide mimics to improve drug-like properties, we found that one of the monosaccharide subunits can be replaced with a suitably functionalized tetrahydropyran ring. Optimization of the structure–activity relationships around the tetrahydropyran-based scaffold

  Galectin-3是β-半乳糖苷结合蛋白家族的成员。大量文献报道，galectin-3在癌症，炎症和纤维化中起重要作用。小分子半乳糖凝集素3抑制剂通常是乳糖或半乳糖基衍生物，具有成为有价值的疾病缓解剂的潜力。在我们努力确定新型半乳糖凝集素3二糖模拟物以改善药物样特性的过程中，我们发现单糖亚基之一可以被适当官能化的四氢吡喃环取代。优化基于四氢吡喃的支架周围的结构-活性关系导致了有效的galectin-3抑制剂的发现。化合物36，40，和45选择用于进一步的体内评估。描述了新型的基于四氢吡喃的galectin-3抑制剂的合成，结构-活性关系以及体内评估。