2-氯-5-甲基吡啶-3-甲醛 | 92444-99-0

• 物质功能分类: 医药中间体 - 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-5-甲基吡啶-3-甲醛
• 英文名称: 2-chloro-5-methylpyridine-3-carbaldehyde
• 英文别名: 2-chloronicotinaldehyde
• CAS: 92444-99-0
• 化学式: C₇H₆ClNO
• mdl: MFCD07375370
• 分子量: 155.584
• InChiKey: IZDJJYRXECMSLX-UHFFFAOYSA-N

物化性质

• 沸点：
  265.5±35.0℃ (760 Torr)
• 密度：
  1.269±0.06 g/cm3 (20 ºC 760 Torr)
• 闪点：
  114.4±25.9℃

计算性质

• 辛醇/水分配系数(LogP)：
  1.6
• 重原子数：
  10
• 可旋转键数：
  1
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.142
• 拓扑面积：
  30
• 氢给体数：
  0
• 氢受体数：
  2

安全信息

• 危险等级：
  IRRITANT
• 海关编码：
  2933399090
• WGK Germany：
  3
• 危险性防范说明：
  P305+P351+P338
• 危险性描述：
  H302,H319
• 储存条件：
  室温

SDS

Material Safety Data Sheet

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Section 1. Identification of the substance
Product Name: 2-Chloro-5-methylpyridine-3-carbaldehyde
Synonyms: 2-Chloro-5-methylnicotinaldehyde

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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-Chloro-5-methylpyridine-3-carbaldehyde
CAS number: 92444-99-0

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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: C7H6ClNO
Molecular weight: 155.6

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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

制备方法与用途

概述

2-氯-5-甲基吡啶-3-甲醛是一种重要的医药中间体，主要用于制备抑制二肽激肽酶（DPP-IV）的化合物及其药学上可接受的盐。初步的药理活性筛选试验显示，这些合成的化合物具有较强的DPP-IV抑制活性，并对正常大鼠表现出显著的降糖效果，展现出良好的开发潜力。

应用

2-氯-5-甲基吡啶-3-甲醛作为一种醛类有机物，可作为医药中间体使用。

反应信息

• 作为反应物：
  描述：

  2-氯-5-甲基吡啶-3-甲醛 在 氢气 、 sodium acetate 、 palladium dichloride 作用下， 以 甲醇 为溶剂， 35.0 ℃ 、101.33 kPa 条件下， 反应 2.0h， 以76%的产率得到5-甲基-3-吡啶甲醇
  参考文献：
  名称：

  Simultaneous dehalogenation and hydrogenation reduction of halogen-heteroaromatic aldehydes

  摘要：

  Treatment of halogen-heteroaromatic aldehydes with catalytic amount of PdCl2 under atmosphere pressure of hydrogen in base medium (sodium acetate) leads to the corresponding dehalogenated primary alcohols. The reaction system was especially effective for the heteroaromatic compounds bearing aldehyde groups and halides (bromo- or chloro-functions). Crown Copyright (C) 2012 Published by Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tetlet.2012.05.054
• 作为产物：
  描述：

  在 sodium hydroxide 作用下， 以 水 为溶剂， 以89.1%的产率得到2-氯-5-甲基吡啶-3-甲醛
  参考文献：
  名称：

  一种2-氯-5-甲基吡啶-3-甲醛的合成方法

  摘要：

  本发明公开了一种2‑氯‑5‑甲基吡啶‑3‑甲醛的合成方法，步骤为：向釜中加入N，N‑二甲基甲酰胺，通入光气低温反应，再滴加2‑氯‑5甲基吡啶溶液，控制温度0～30℃，滴加完毕继续保温2h后，升温至指定温度保温合成2‑氯‑5‑甲基吡啶‑3‑甲醛；将合成液降至指定温度，向釜中滴加氢氧化钠水溶液调节PH至碱性，控制物料温度小于40℃，分层得油层和水层；将水层采用溶剂萃取二次，得萃取后油层，合并油层获得水洗后油层；将水洗后油层采用薄膜蒸发器蒸馏出溶剂，获得重组分物料进行熔融结晶，控制熔融温度得到低熔点组分，经处理后套用至产品合成工序，得到高熔点组分为目标产物。本发明工艺具有产品收率高，副反应少的特点，易于制备高含量的2‑氯‑5‑甲基吡啶‑3‑甲醛。

  公开号：

  CN113816900A

文献信息

• FUSED BICYLIC PYRIDINE COMPOUNDS AND THEIR USE AS AMPA RECEPTOR MODULATORS
  申请人：Janssen Pharmaceutica NV

  公开号：US20180111933A1

  公开（公告）日：2018-04-26

  Provided herein are compounds of Formula (I), and pharmaceutically acceptable salts, N-oxides, or solvates thereof, Also provided herein are pharmaceutical compositions comprising compounds of Formula (I) and methods of using compounds of Formula (I).

  本文提供了式（I）的化合物，以及其药学上可接受的盐、N-氧化物或溶剂化合物， 本文还提供了包含式（I）化合物的药物组合物以及使用式（I）化合物的方法。
• Baylis–Hillman adducts between pyridine carboxaldehyde derivatives and cyclic enones
  作者：P. Narender、B. Gangadasu、M. Ravinder、U. Srinivas、G.Y.S.K. Swamy、K. Ravikumar、V. Jayathirtha Rao

  DOI：10.1016/j.tet.2005.10.032

  日期：2006.1

  were synthesized using pyridinecarboxaldehyde derivatives and cyclic enones. The Baylis–Hillman reaction was examined by employing various organic tertiary bases and solvents. It was observed that DBU in MeOH as well as imidazole and N-methylimidazole in aqueous MeOH are very effective. These pyridinecarboxaldehydes were reactive and efficient towards the Baylis–Hillman reaction and the resulting adducts

  使用吡啶甲醛甲醛衍生物和环状烯酮合成Baylis-Hillman（BH）加合物。通过使用各种有机叔碱和溶剂检查了Baylis-Hillman反应。观察到在MeOH中的DBU以及在MeOH水溶液中的咪唑和N-甲基咪唑是非常有效的。这些吡啶甲醛对Baylis-Hillman反应具有反应性和高效性，所得加合物高度稳定。确定了一种BH加合物的晶体结构。
• Site-Selective γ-C(sp³)−H and γ-C(sp²)−H Arylation of Free Amino Esters Promoted by a Catalytic Transient Directing Group
  作者：Hua Lin、Chao Wang、Thomas D. Bannister、Theodore M. Kamenecka

  DOI：10.1002/chem.201802465

  日期：2018.7.5

  The first selective PdII‐catalysed γ‐C(sp3)−H and γ‐C(sp2)−H arylation of free amino esters using a commercially available catalytic transient directing group. A variety of free amino esters, including α‐amino esters and β‐amino esters, amino monoesters and amino bis‐esters, are shown to react with a diverse range of simple aryl and heteroaryl iodide reagents.

  首次使用选择性Pd II催化的游离氨基酯的γ-C（sp 3）-H和γ-C（sp 2）-H芳基化反应，使用市售的催化瞬态导向基团。各种游离的氨基酯，包括α-氨基酯和β-氨基酯，氨基单酯和氨基双酯，都可以与多种简单的碘化芳基和杂芳基试剂反应。
• Facile and selective synthesis of chloronicotinaldehydes by the Vilsmeier reaction
  作者：B. Gangadasu、P. Narender、S. Bharath Kumar、M. Ravinder、B. Ananda Rao、Ch. Ramesh、B. China Raju、V. Jayathirtha Rao

  DOI：10.1016/j.tet.2006.06.026

  日期：2006.8

  prepared were subjected to Vilsmeier reaction using (i) POCl3/DMF; (ii) diphosgene/DMF; (iii) triphosgene/DMF leading to the formation of various multisubstituted chloronicotinaldehydes. Studies carried out indicate that Vilsmeier reagent concentration and the replacement of POCl3 by diphosgene or triphosgene, provides excellent selectivity and higher yields. Under modified reaction conditions one can get

  通过采用不同的方法制备了十一种酰胺。使用（i）POCl 3 / DMF使制备的各种酰胺进行Vilsmeier反应。（ii）双光气/ DMF；（iii）三光气/ DMF导致形成各种多取代的氯烟碱醛。进行的研究表明，Vilsmeier试剂的浓度以及用双光气或三光气替代POCl 3可以提供出色的选择性和更高的收率。在改良的反应条件下，只能得到氯烟碱醛而不是作为产物的氯吡啶。说明了使用双光气和三光气的各种优点。讨论了烟碱醛的形成机理。
• Microwave-Assisted Convenient Synthesis of<i>α</i>,<i>β</i>-Unsaturated Esters and Ketones<i>via</i>Aldol-Adduct Elimination
  作者：Pathi Suman、Rayala Nageswara Rao、Bhimapaka China Raju

  DOI：10.1002/hlca.201200526

  日期：2013.8

  Various fluorinated 3‐oxo ester/1,3‐diketones were reacted with carbonyl compounds, in presence of piperidine and under microwave irradiation, to afford (E)‐α,β‐unsaturated esters and ketones in good yields. The systematic study reveals that the reaction proceeded through the formation of aldol adduct. The method provides a new and simple way for C,C bond formations.

  在哌啶存在下并在微波辐射下，将各种氟化的3-氧代酯/ 1,3-二酮与羰基化合物反应，得到高收率的（E）-α，β-不饱和酯和酮。系统研究表明反应是通过醛醇加合物的形成而进行的。该方法为C，C键的形成提供了一种新的简单方法。