2-(4-乙基苯氧基)丙酸 | 99761-31-6

• 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-乙基苯氧基)丙酸
• 英文名称: 2-(4-ethylphenoxy)propanoic acid
• CAS: 99761-31-6
• 化学式: C₁₁H₁₄O₃
• mdl: MFCD03422221
• 分子量: 194.23
• InChiKey: OSZYRPFCAFFXIF-UHFFFAOYSA-N

物化性质

• 沸点：
  316.3±17.0 °C(Predicted)
• 密度：
  1.114±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.5
• 重原子数：
  14
• 可旋转键数：
  4
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.363
• 拓扑面积：
  46.5
• 氢给体数：
  1
• 氢受体数：
  3

安全信息

• 危险等级：
  IRRITANT
• 危险品标志：
  Xi
• 海关编码：
  2918990090

SDS

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SECTION 1: Identification of the substance/mixture and of the company/undertaking
Product identifiers
Product name : 2-(4-Ethylphenoxy)Propanoic Acid
REACH No. : A registration number is not available for this substance as the substance
or its uses are exempted from registration, the annual tonnage does not
require a registration or the registration is envisaged for a later
registration deadline.
Relevant identified uses of the substance or mixture and uses advised against
Identified uses : Laboratory chemicals, Manufacture of substances

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SECTION 2: Hazards identification
Classification of the substance or mixture
Not a hazardous substance or mixture according to Regulation (EC) No. 1272/2008.
This substance is not classified as dangerous according to Directive 67/548/EEC.
Label elements
The product does not need to be labelled in accordance with EC directives or respective national laws.
Other hazards
This substance/mixture contains no components considered to be either persistent, bioaccumulative and
toxic (PBT), or very persistent and very bioaccumulative (vPvB) at levels of 0.1% or higher.

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SECTION 3: Composition/information on ingredients
Substances
Molecular weight : 194,23 g/mol
No components need to be disclosed according to the applicable regulations.

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SECTION 4: First aid measures
Description of first aid measures
If inhaled
If breathed in, move person into fresh air. If not breathing, give artificial respiration.
In case of skin contact
Wash off with soap and plenty of water.
In case of eye contact
Flush eyes with water as a precaution.
If swallowed
Never give anything by mouth to an unconscious person. Rinse mouth with water.
Most important symptoms and effects, both acute and delayed
The most important known symptoms and effects are described in the labelling (see section 2.2) and/or in
section 11
Indication of any immediate medical attention and special treatment needed
No data available

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SECTION 5: Firefighting measures
Extinguishing media
Suitable extinguishing media
Use water spray, alcohol-resistant foam, dry chemical or carbon dioxide.
Special hazards arising from the substance or mixture
Nature of decomposition products not known.
Advice for firefighters
Wear self-contained breathing apparatus for firefighting if necessary.
Further information
No data available

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SECTION 6: Accidental release measures
Personal precautions, protective equipment and emergency procedures
Avoid dust formation. Avoid breathing vapours, mist or gas.
For personal protection see section 8.
Environmental precautions
No special environmental precautions required.
Methods and materials for containment and cleaning up
Sweep up and shovel. Keep in suitable, closed containers for disposal.
Reference to other sections
For disposal see section 13.

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SECTION 7: Handling and storage
Precautions for safe handling
Provide appropriate exhaust ventilation at places where dust is formed.
For precautions see section 2.2.
Conditions for safe storage, including any incompatibilities
Store in cool place. Keep container tightly closed in a dry and well-ventilated place.
Storage class (TRGS 510): Non Combustible Solids
Specific end use(s)
Apart from the uses mentioned in section 1.2 no other specific uses are stipulated

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SECTION 8: Exposure controls/personal protection
Control parameters
Components with workplace control parameters
Exposure controls
Appropriate engineering controls
General industrial hygiene practice.
Personal protective equipment
Eye/face protection
Use equipment for eye protection tested and approved under appropriate government standards
such as NIOSH (US) or EN 166(EU).
Skin protection
Handle with gloves. Gloves must be inspected prior to use. Use proper glove removal technique
(without touching glove's outer surface) to avoid skin contact with this product. Dispose of
contaminated gloves after use in accordance with applicable laws and good laboratory practices.
Wash and dry hands.
The selected protective gloves have to satisfy the specifications of EU Directive 89/686/EEC and
the standard EN 374 derived from it.
Body Protection
Choose body protection in relation to its type, to the concentration and amount of dangerous
substances, and to the specific work-place., The type of protective equipment must be selected
according to the concentration and amount of the dangerous substance at the specific workplace.
Respiratory protection
Respiratory protection is not required. Where protection from nuisance levels of dusts are desired,
use type N95 (US) or type P1 (EN 143) dust masks. Use respirators and components tested and
approved under appropriate government standards such as NIOSH (US) or CEN (EU).
Control of environmental exposure
No special environmental precautions required.

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SECTION 9: Physical and chemical properties
Information on basic physical and chemical properties
a) Appearance Form: solid
b) Odour No data available
c) Odour Threshold No data available
d) pH No data available
e) Melting point/freezing No data available
point
f) Initial boiling point and No data available
boiling range
g) Flash point No data available
h) Evaporation rate No data available
i) Flammability (solid, gas) No data available
j) Upper/lower No data available
flammability or
explosive limits
k) Vapour pressure No data available
l) Vapour density No data available
m) Relative density No data available
n) Water solubility No data available
o) Partition coefficient: n- No data available
octanol/water
p) Auto-ignition No data available
temperature
q) Decomposition No data available
temperature
r) Viscosity No data available
s) Explosive properties No data available
t) Oxidizing properties No data available
Other safety information
No data available

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SECTION 10: Stability and reactivity
Reactivity
No data available
Chemical stability
Stable under recommended storage conditions.
Possibility of hazardous reactions
No data available
Conditions to avoid
No data available
Incompatible materials
Strong oxidizing agents
Hazardous decomposition products
In the event of fire: see section 5

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SECTION 11: Toxicological information
Information on toxicological effects
Acute toxicity
No data available
Skin corrosion/irritation
No data available
Serious eye damage/eye irritation
No data available
Respiratory or skin sensitisation
No data available
Germ cell mutagenicity
No data available
Carcinogenicity
IARC: No component of this product present at levels greater than or equal to 0.1% is identified as
probable, possible or confirmed human carcinogen by IARC.
Reproductive toxicity
No data available
Specific target organ toxicity - single exposure
No data available
Specific target organ toxicity - repeated exposure
No data available
Aspiration hazard
No data available
Additional Information
RTECS: Not available
To the best of our knowledge, the chemical, physical, and toxicological properties have not been
thoroughly investigated.

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SECTION 12: Ecological information
Toxicity
No data available
Persistence and degradability
No data available
Bioaccumulative potential
No data available
Mobility in soil
No data available
Results of PBT and vPvB assessment
This substance/mixture contains no components considered to be either persistent, bioaccumulative and
toxic (PBT), or very persistent and very bioaccumulative (vPvB) at levels of 0.1% or higher.
Other adverse effects
No data available

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SECTION 13: Disposal considerations
Waste treatment methods
Product
Offer surplus and non-recyclable solutions to a licensed disposal company.
Contaminated packaging
Dispose of as unused product.

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SECTION 14: Transport information
UN number
ADR/RID: - IMDG: - IATA: -
UN proper shipping name
ADR/RID: Not dangerous goods
IMDG: Not dangerous goods
IATA: Not dangerous goods
Transport hazard class(es)
ADR/RID: - IMDG: - IATA: -
Packaging group
ADR/RID: - IMDG: - IATA: -
Environmental hazards
ADR/RID: no IMDG Marine pollutant: no IATA: no
Special precautions for user
No data available

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SECTION 15: Regulatory information
This safety datasheet complies with the requirements of Regulation (EC) No. 1907/2006.
Safety, health and environmental regulations/legislation specific for the substance or mixture
No data available
Chemical Safety Assessment
For this product a chemical safety assessment was not carried out

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SECTION 16: Other information
Further information
Copyright 2014 Co. LLC. License granted to make unlimited paper copies for internal use
only.
The above information is believed to be correct but does not purport to be all inclusive and shall be
used only as a guide. The information in this document is based on the present state of our knowledge
and is applicable to the product with regard to appropriate safety precautions. It does not represent any
guarantee of the properties of the product. Corporation and its Affiliates shall not be held
liable for any damage resulting from handling or from contact with the above product. See
and/or the reverse side of invoice or packing slip for additional terms and conditions of sale.

反应信息

• 作为反应物：
  描述：

  2-(4-乙基苯氧基)丙酸 在 Beauveria bassiana LU 700 、 medium A 作用下， 生成 2-[4-(1-Hydroxyethyl)phenoxy]propanoic acid
  参考文献：
  名称：

  Preparation of (R)-2-(4-hydroxyphenoxy) propionic acid by biotransformation

  摘要：

  With Beauveria in bassiana Lu 700 as biocatalyst an ecologically beneficial process has been developed for the production of (R)-2-(4-hydroxyphenoxy) propionic acid. The fungal strain used in this process, B. bassiana Lu 700, is also a very suitable catalyst for the selective monohydroxylation of other aromatic carboxylic acids.

  DOI：

  10.1002/(sici)1096-9063(199601)46:1<33::aid-ps338>3.0.co;2-r
• 作为产物：
  描述：

  (R/S)-Ethyl 2-(4-ethylphenoxy)propionate 在 alkali 作用下， 生成 2-(4-乙基苯氧基)丙酸
  参考文献：
  名称：

  Azzolina; Collina; Ghislandi, Il Farmaco, 1993, vol. 48, # 10, p. 1401 - 1416

  摘要：

  DOI：

文献信息

• Access to Optically Enriched α-Aryloxycarboxylic Esters via Carbene-Catalyzed Dynamic Kinetic Resolution and Transesterification
  作者：Bin Liu、Runjiang Song、Jun Xu、Pankaj Kumar Majhi、Xing Yang、Song Yang、Zhichao Jin、Yonggui Robin Chi

  DOI：10.1021/acs.orglett.0c00748

  日期：2020.5.1

  Disclosed here is a carbene-catalyzed dynamic kinetic resolution and transesterification reaction for access to this class of molecules with up to 99% yields and 99:1 er values. Addition of a chiral carbene catalyst to the ester substrate leads to two diastereomeric azolium ester intermediates that can quickly epimerize to each other and thus allows for effective dynamic kinetic resolution to be realized

  光学活性α-芳氧基羧酸及其衍生物是重要的功能分子。这里公开了一种卡宾催化的动态动力学拆分和酯交换反应，用于以高达 99% 的产率和 99:1 的 er 值获得这类分子。将手性卡宾催化剂添加到酯底物中会产生两种非对映体唑鎓酯中间体，它们可以快速彼此差向异构化，从而实现有效的动态动力学拆分。我们反应中的光学富集酯产物可以快速转化为手性除草剂和其他生物活性分子。
• Increased Enantioselectivity and Remarkable Acceleration of Lipase-Catalyzed Transesterification by Using an Imidazolium PEG–Alkyl Sulfate Ionic Liquid
  作者：Toshiyuki Itoh、Yuichi Matsushita、Yoshikazu Abe、Shi-hui Han、Shohei Wada、Shuichi Hayase、Motoi Kawatsura、Shigeomi Takai、Minoru Morimoto、Yoshihiko Hirose

  DOI：10.1002/chem.200601043

  日期：2006.12.13

  types of imidazolium salt ionic liquids were prepared derived from poly(oxyethylene)alkyl sulfate and used as an additive or coating material for lipase-catalyzed transesterification in an organic solvent. A remarkably increased enantioselectivity was obtained when the salt was added at 3-10 mol % versus substrate in the Burkholderia cepacia lipase (lipase PS-C)-catalyzed transesterification of 1-phenylethanol

  从聚（氧乙烯）烷基硫酸酯制备了几种类型的咪唑鎓盐离子液体，并用作在有机溶剂中脂肪酶催化的酯交换反应的添加剂或涂料。通过在二异丙醚或己烷溶剂体系中使用乙酸乙烯酯，在伯克霍尔德菌洋葱脂肪酶（脂肪酶PS-C）催化的1-苯基乙醇酯交换反应中，以相对于底物3-10 mol％的量添加盐时，可获得显着提高的对映选择性。尤其是，在iPr（2）O溶剂系统中，用脂肪酶PS进行离子液体涂覆可实现显着的加速，同时保持出色的对映选择性。对于某些具有出色对映选择性的底物，它达到了约500至1000倍的加速度。对于IL 1包被的假丝酵母念珠菌脂肪酶也观察到类似的加速。离子液体包被的脂肪酶PS的MALDI-TOF质谱实验表明，离子液体与脂肪酶蛋白结合。
• Drastic enhancement of the enantioselectivity of lipase-catalysed esterification in organic solvents by the addition of metal ions
  作者：Takashi Okamoto、Shinichi Ueji

  DOI：10.1039/a902255d

  日期：——

  By the addition of metal ion-containing water, a marked enhancement of the enantioselectivity for the lipase-catalysed esterification of 2-(4-substituted-phenoxy)propionic acids in Pri2O was observed, the mechanism of which will be discussed briefly on the basis of the initial rate obtained for each enantiomer of the substrate.

  通过添加含金属离子的水，观察到在Pri2O中，2-(4-取代苯氧)丙酸的脂肪酶催化酯化反应的对映选择性显著增强，机制将基于每个底物对映体的初始速率进行简要讨论。
• Effects of Substituent and Temperature on Enantioselectivity for Lipase-Catalyzed Esterification of 2-(4-Substituted Phenoxy) Propionic Acids in Organic Solvents
  作者：Keiichi Watanabe、Takashi Koshiba、Yoshitaka Yasufuku、Toshifumi Miyazawa、Shin-ichi Ueji

  DOI：10.1006/bioo.2000.1190

  日期：2001.4

  Substituent effects on the enantioselectivity for the lipase-catalyzed esterifications in organic solvents were studied by use of 2-(4-substituted phenoxy)propionic acids as the substrates with various substituents of H, F, Cl, CF(3), CH(3), CH(3)CH(2), and CH(3)O. The distinction in the behavior of their enantioselectivity was primarily responsible for the size effects of the substituents, although

  通过使用2-（4-取代的苯氧基）丙酸作为具有H，F，Cl，CF（3），CH（3）各种取代基的底物，研究了有机溶剂中取代酶对脂肪酶催化的酯化反应的对映选择性的影响。 ），CH（3）CH（2）和CH（3）O。尽管取代基远离底物的立体中心，但它们的对映选择性在行为上的区别主要是对取代基的尺寸效应的影响。对于大小相似的取代基CH（3）和CF（3），它们的电子效应在控制对映选择性中起着重要作用。基于获得的米氏常数（K（m））的值的讨论也支持由于电子效应引起的对映选择性的这种变化。此外，
• Metal ions dramatically enhance the enantioselectivity for lipase-catalysed reactions in organic solvents
  作者：Takashi Okamoto、Ebara Yasuhito、Shin-ichi Ueji

  DOI：10.1039/b514885e

  日期：——

  simple and a powerful method to enhance the enantioselectivity for lipase-catalysed transformations in organic solvents by an addition of metal ion-containing water to the reaction mixture. In this paper, various metal ions such as LiCl or MgCl2 are tested to improve the enantioselectivity for the model reactions. The enantioselectivities obtained are dramatically enhanced, the E values of which are about

  我们提出了一种简单有效的方法，通过向反应混合物中添加含金属离子的水来增强对脂肪酶催化的有机溶剂转化的对映选择性。在本文中，对各种金属离子（如LiCl或MgCl2）进行了测试，以提高模型反应的对映选择性。所获得的对映选择性显着提高，与没有金属离子的普通条件（例如，通过添加LiCl的E = 200）相比，其E值约为100倍。此外，降低反应温度导致在金属离子存在下，例如通过添加LiCl，E ＝ 1300，脂肪酶的对映选择性几乎达到完美。还，