2,4 -二甲基戊二酸 | 2121-67-7

• 物质功能分类: 化学试剂 - 有机试剂 - 脂肪酸
• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 脂肪酰基
• 中文名称: 2,4 -二甲基戊二酸
• 中文别名: 2,4-二甲基戊二酸
• 英文名称: 2,4-dimethylglutaric acid
• 英文别名: 2,4-dimethylpentanedioic acid
• CAS: 2121-67-7
• 化学式: C₇H₁₂O₄
• mdl: MFCD00002660
• 分子量: 160.17
• InChiKey: VIWYMIDWAOZEAZ-UHFFFAOYSA-N

物化性质

• 熔点：
  104-108 °C
• 沸点：
  328.8°C (rough estimate)
• 密度：
  1.3681 (rough estimate)
• 稳定性/保质期：
  在常温常压下保持稳定，应避免与不相容的材料及强氧化剂接触。

计算性质

• 辛醇/水分配系数(LogP)：
  0.7
• 重原子数：
  11
• 可旋转键数：
  4
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.714
• 拓扑面积：
  74.6
• 氢给体数：
  2
• 氢受体数：
  4

安全信息

• 安全说明：
  S24/25
• 海关编码：
  2917190090

SDS

Name:	4-Amino-3 5-Diiodobenzoic Acid 85% Material Safety Data Sheet
Synonym:	3,5-Dijod-4-Aminohippursaeure
CAS:	2121-67-7

Section 1 - Chemical Product MSDS Name:4-Amino-3 5-Diiodobenzoic Acid 85% Material Safety Data Sheet
Synonym:3,5-Dijod-4-Aminohippursaeure

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Section 2 - COMPOSITION, INFORMATION ON INGREDIENTS

CAS#	Chemical Name	content	EINECS#
2121-67-7	2,4-Dimethylglutaric acid, 98+%, mixtu		218-330-0

Hazard Symbols: None Listed.
Risk Phrases: None Listed.

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Section 3 - HAZARDS IDENTIFICATION
EMERGENCY OVERVIEW
The toxicological properties of this material have not been fully investigated.
Potential Health Effects
Eye:
May cause eye irritation.
Skin:
May cause skin irritation.
Ingestion:
May cause irritation of the digestive tract. The toxicological properties of this substance have not been fully investigated.
Inhalation:
May cause respiratory tract irritation. The toxicological properties of this substance have not been fully investigated.
Chronic:
No information found.

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Section 4 - FIRST AID MEASURES
Eyes: Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.
Skin:
Get medical aid. Flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse.
Ingestion:
Never give anything by mouth to an unconscious person. Get medical aid. Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water.
Inhalation:
Remove from exposure and move to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
Notes to Physician:

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Section 5 - FIRE FIGHTING MEASURES
General Information:
As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion.
Extinguishing Media:
Use agent most appropriate to extinguish fire. Use water spray, dry chemical, carbon dioxide, or appropriate foam.

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Section 6 - ACCIDENTAL RELEASE MEASURES
General Information: Use proper personal protective equipment as indicated in Section 8.
Spills/Leaks:
Clean up spills immediately, observing precautions in the Protective Equipment section. Sweep up, then place into a suitable container for disposal. Avoid generating dusty conditions. Provide ventilation.

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Section 7 - HANDLING and STORAGE
Handling:
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation.
Storage:
Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.

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Section 8 - EXPOSURE CONTROLS, PERSONAL PROTECTION
Engineering Controls:
Facilities storing or utilizing this material should be equipped with an eyewash facility and a safety shower. Use adequate ventilation to keep airborne concentrations low.
Exposure Limits CAS# 2121-67-7: Personal Protective Equipment Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166.
Skin:
Wear appropriate protective gloves to prevent skin exposure.
Clothing:
Wear appropriate protective clothing to prevent skin exposure.
Respirators:
A respiratory protection program that meets OSHA's 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant respirator use.

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Section 9 - PHYSICAL AND CHEMICAL PROPERTIES

Physical State: Crystalline powder
Color: beige pink
Odor: None reported.
pH: Not available.
Vapor Pressure: Not available.
Viscosity: Not available.
Boiling Point: Not available.
Freezing/Melting Point: > 300 deg C
Autoignition Temperature: Not applicable.
Flash Point: Not applicable.
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature:
Solubility in water:
Specific Gravity/Density:
Molecular Formula: H2NC6H2(I)2CO2H
Molecular Weight: 388.92

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Section 10 - STABILITY AND REACTIVITY
Chemical Stability:
Stable under normal temperatures and pressures.
Conditions to Avoid:
Incompatible materials, dust generation, excess heat, strong oxidants.
Incompatibilities with Other Materials:
Oxidizing agents.
Hazardous Decomposition Products:
Hydrogen chloride, nitrogen oxides, carbon monoxide, irritating and toxic fumes and gases, carbon dioxide.
Hazardous Polymerization: Has not been reported.

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Section 11 - TOXICOLOGICAL INFORMATION
RTECS#:
CAS# 2121-67-7 unlisted.
LD50/LC50:
Not available.
Carcinogenicity:
2,4-Dimethylglutaric acid, 98+%, mixture of DL and meso - Not listed by ACGIH, IARC, or NTP.

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Section 12 - ECOLOGICAL INFORMATION

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Section 13 - DISPOSAL CONSIDERATIONS
Dispose of in a manner consistent with federal, state, and local regulations.

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Section 14 - TRANSPORT INFORMATION

IATA
Not regulated as a hazardous material.
IMO
Not regulated as a hazardous material.
RID/ADR
Not regulated as a hazardous material.

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Section 15 - REGULATORY INFORMATION

European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: Not available.
Risk Phrases:
Safety Phrases:
S 24/25 Avoid contact with skin and eyes.
S 28A After contact with skin, wash immediately with
plenty of water.
S 37 Wear suitable gloves.
S 45 In case of accident or if you feel unwell, seek
medical advice immediately (show the label where
possible).
WGK (Water Danger/Protection)
CAS# 2121-67-7: No information available.
Canada
None of the chemicals in this product are listed on the DSL/NDSL list.
CAS# 2121-67-7 is not listed on Canada's Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 2121-67-7 is not listed on the TSCA inventory.
It is for research and development use only.

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SECTION 16 - ADDITIONAL INFORMATION
N/A

反应信息

• 作为反应物：
  描述：

  2,4 -二甲基戊二酸 在 乙酸酐 作用下， 反应 6.0h， 以54%的产率得到顺式-3,5-二甲基二氢-2H-吡喃-2,6(3H)-二酮
  参考文献：
  名称：

  碘霉素的形式合成中酸酐的催化烷基化不对称化

  摘要：

  献给斯科特教授丹麦在他65之际个生日。 发布时间为致力于斯科特E.丹麦在他65之际特殊部分的部分次生日。 抽象的 用锌试剂对酸酐进行催化脱对称可提供脱氧聚丙酸酯和聚丙酸酯合成子的途径。进行离子霉素的合成，其中使用这种方法将四个片段中的三个组装在一起。两种策略（烯醇硅烷/氧碳鎓偶联和还原环化）均未成功安装C23立体中心，但通过还原/ S N 2方法克服了该立体化学问题。除了合成离子霉素的受保护的非对映异构体之外，C17–C32片段的合成还构成正式的总合成。 用锌试剂对酸酐进行催化脱对称可提供脱氧聚丙酸酯和聚丙酸酯合成子的途径。进行离子霉素的合成，其中使用这种方法将四个片段中的三个组装在一起。两种策略（烯醇硅烷/氧碳鎓偶联和还原环化）均未成功安装C23立体中心，但通过还原/ S N 2方法克服了该立体化学问题。除了合成离子霉素的受保护的非对映异构体之外，C17–C32片段的合成还构成正式的总合成。

  DOI：

  10.1055/s-0037-1610108
• 作为产物：
  描述：

  2,2,4-戊烷三羧酸三乙酯 在 盐酸 作用下， 以 水 为溶剂， 反应 60.0h， 以66%的产率得到2,4 -二甲基戊二酸
  参考文献：
  名称：

  碘霉素的形式合成中酸酐的催化烷基化不对称化

  摘要：

  献给斯科特教授丹麦在他65之际个生日。 发布时间为致力于斯科特E.丹麦在他65之际特殊部分的部分次生日。 抽象的 用锌试剂对酸酐进行催化脱对称可提供脱氧聚丙酸酯和聚丙酸酯合成子的途径。进行离子霉素的合成，其中使用这种方法将四个片段中的三个组装在一起。两种策略（烯醇硅烷/氧碳鎓偶联和还原环化）均未成功安装C23立体中心，但通过还原/ S N 2方法克服了该立体化学问题。除了合成离子霉素的受保护的非对映异构体之外，C17–C32片段的合成还构成正式的总合成。 用锌试剂对酸酐进行催化脱对称可提供脱氧聚丙酸酯和聚丙酸酯合成子的途径。进行离子霉素的合成，其中使用这种方法将四个片段中的三个组装在一起。两种策略（烯醇硅烷/氧碳鎓偶联和还原环化）均未成功安装C23立体中心，但通过还原/ S N 2方法克服了该立体化学问题。除了合成离子霉素的受保护的非对映异构体之外，C17–C32片段的合成还构成正式的总合成。

  DOI：

  10.1055/s-0037-1610108

文献信息

• Photochemical Rearrangement of <i>N</i>-Mesyloxylactams: Stereospecific Formation of <i>N</i>-Heterocycles
  作者：Alexandre Drouin、Dana K. Winter、Simon Pichette、Samuel Aubert-Nicol、Jean Lessard、Claude Spino

  DOI：10.1021/jo101805q

  日期：2011.1.7

  N-Mesyloxylactams undergo an efficient ring-contraction to N-heterocycles of various ring sizes. Yields increase with the degree of substitution α to the carbonyl. The stereochemical information of a chiral migrating carbon is conserved making this reaction a synthetically useful complement to the well-known Hofmann, Curtius, Lossen, and Schmidt rearrangements.

  N-甲氧基内酰胺类对各种环大小的N-杂环进行有效的环收缩。产率随羰基的取代度α而增加。保留了手性迁移碳的立体化学信息，使该反应成为众所周知的霍夫曼，库尔蒂乌斯，洛森和施密特重排的合成有用补充。
• D-proline derivatives
  申请人：Hoffmann-La Roche Inc.

  公开号：US06103910A1

  公开（公告）日：2000-08-15

  New compounds have the formula: ##STR1## wherein R, R.sup.1, X and Y have the meanings described herein. Methods are set forth for synthesizing these compounds and using these compounds to treat diseases associated with amyloidosis, such as Alzheimer's disease, maturity onset diabetes mellitus, familial amyloid polyneuropathy, scrapie, and Kreuzfeld-Jacob disease.

  新化合物的化学式为：##STR1## 其中R、R.sup.1、X和Y的含义如本文所述。本文提供了合成这些化合物和使用这些化合物治疗与淀粉样变性相关的疾病的方法，如阿尔茨海默病、成人起病糖尿病、家族性淀粉样多发性神经病、痱子病和克雅氏病。
• Regioselective Photochemical Rearrangement of N-Mesyloxylactams
  作者：Simon Pichette、Samuel Aubert-Nicol、Jean Lessard、Claude Spino

  DOI：10.1002/ejoc.201101222

  日期：2012.3

  N-Mesyloxylactams can undergo ring contraction either by C-3 (usually observed) or C-5 migration. C-5 migration can occur when the C-3 migration product possesses ring strain, but it does not usually compete with C-3 migration. The greater preference for C-3 migration is due to the carbonyl oxygen atom, which greatly stabilizes the intermediate.

  N-Mesyloxylactams 可以通过 C-3（通常观察到）或 C-5 迁移进行环收缩。当 C-3 迁移产物具有环应变时会发生 C-5 迁移，但它通常不与 C-3 迁移竞争。C-3 迁移的更大偏好是由于羰基氧原子，它极大地稳定了中间体。
• FUNCTIONALIZED MONOMERS AND POLYMERS
  申请人：DiBiase Stephen Augustine

  公开号：US20120245063A1

  公开（公告）日：2012-09-27

  This invention relates to a composition, comprising: an unsaturated functionalized monomer of from about 5 to about 30 carbon atoms, which is: (a) polymerized to form a functionalized polymer; (b) copolymerized with a comonomer to form a functionalized copolymer; or (c) reacted with an enophilic reagent to form a polyfunctionalized monomer. The polyfunctionalized monomer may be polymerized to form a polyfunctionalized polymer which may be further reacted with one or more additional reagents. The invention relates to lubricants, functional fluids, fuels, dispersants, detergents and polymeric resins.

  这项发明涉及一种组合物，包括：一个由约5至约30个碳原子的不饱和官能化单体组成，该单体：(a)聚合形成官能化聚合物；(b)与共聚单体共聚形成官能化共聚物；或(c)与亲亚烯试剂反应形成多官能单体。多官能单体可以聚合形成多官能聚合物，该聚合物可以进一步与一个或多个额外试剂反应。该发明涉及润滑剂、功能流体、燃料、分散剂、清洁剂和聚合树脂。
• Enamine chemistry. Part III. Reaction of αβ-unsaturated acid chlorides with enamines of acyclic ketones. Preparation of cyclohexane-1,3-diones
  作者：J. R. Hargreaves、P. W. Hickmott、B. J. Hopkins

  DOI：10.1039/j39680002599

  日期：——

  isopropyl ketone and the dimethylamine enamine of di-isopropyl ketone gave 2,2,4-trimethyl- and 2,2,4,4-tetramethyl-cyclohexane-1,3-diones respectively. The morpholine enamine of dibenzyl ketone gave 3-morpholino-2,4-diphenyl-cyclohex-2-enone which could not be hydrolysed to the cyclohexane-1,3-dione. The mechanism of the reaction is discussed.

  丙烯酰，巴豆酰和甲基丙烯酰氯与二乙基酮的吗啉烯胺反应已显示出2,4-二甲基-，2,4,5-三甲基-和2,4,6-三甲基-环己烷-1， 3-二酮。中间体取代的3-吗啉代环己基-2-烯酮已被分离并表征为其高氯酸盐。乙基异丙基酮的丙烯酰氯和吗啉烯胺和二异丙基酮的二甲基胺烯胺分别得到2,2,4-三甲基-和2,2,4,4-四甲基-环己烷-1,3-二酮。二苄基酮的吗啉烯胺得到3-吗啉代-2，4-二苯基-环己二-2-烯酮，其不能水解为环己烷-1，3-二酮。讨论了反应机理。

表征谱图