16674-04-7

Basic information

• Product Name: 3-chloro-2-methylpropionic acid
• Synonyms: 3-chloro-2-methylpropionic acid;3-Chloro-2-methylpropanoic acid
• CAS NO: 16674-04-7
• Molecular Formula: C₄H₇ClO₂
• Molecular Weight: 122.55
• Mol File: 16674-04-7.mol
• Article Data: 7

Chemical Properties

• Melting Point: 210 °C
• Boiling Point: 153.15°C (rough estimate)
• Flash Point: 69.5°C
• Appearance: /
• Density: 1.2046
• Vapor Pressure: 0.227mmHg at 25°C
• Refractive Index: 1.4310
• Storage Temp.: 2-8°C
• PKA: 4.09±0.10(Predicted)
• CAS DataBase Reference: 3-chloro-2-methylpropionic acid(CAS DataBase Reference)
• NIST Chemistry Reference: 3-chloro-2-methylpropionic acid(16674-04-7)
• EPA Substance Registry System: 3-chloro-2-methylpropionic acid(16674-04-7)

Safety Data

• Hazardous Substances Data: 16674-04-7(Hazardous Substances Data)

Usage

Description

3-chloro-2-methylpropionic acid, also known as 3-chloro-2-methylpropanoic acid, is a colorless liquid chemical compound with the molecular formula C4H7ClO2. It possesses a pungent odor and is widely used as a building block in the synthesis of various organic compounds.

Uses

Used in Pharmaceutical Industry:
3-chloro-2-methylpropionic acid is used as a chemical intermediate for the production of pharmaceuticals. It plays a crucial role in the synthesis of various drugs, contributing to the development of new medications and improving the efficacy of existing ones.
Used in Agrochemical Industry:
In the agrochemical industry, 3-chloro-2-methylpropionic acid is utilized as a key component in the manufacturing of pesticides and other agricultural chemicals. Its incorporation enhances the effectiveness of these products, promoting better crop protection and yield.
Used in Flavors and Fragrances Industry:
3-chloro-2-methylpropionic acid serves as a chemical intermediate in the creation of flavors and fragrances. It is instrumental in developing unique scents and tastes for various consumer products, including food, beverages, and cosmetics.
Used in Organic Compounds Synthesis:
This chemical compound is used as a building block in the synthesis of various organic compounds, such as esters and amides. Its versatility allows for the production of a wide range of chemicals with diverse applications across different industries.
Available in Various Purities and Grades:
Due to its extensive applications, 3-chloro-2-methylpropionic acid is available in different purities and grades to cater to the specific requirements of various industries, ensuring optimal performance and quality in end products.

InChI:InChI=1/C4H7ClO2/c1-3(2-5)4(6)7/h3H,2H2,1H3,(H,6,7)

Upstream product

• 79-31-2 isobutyric Acid 
• 79-41-4 poly(methacrylic acid) 
• 7782-50-5 chlorine 
• 56-23-5 tetrachloromethane 
• 7791-25-5 sulfuryl dichloride 
• 94-36-0 dibenzoyl peroxide 
• 7719-12-2 phosphorus trichloride 
• 79-30-1 isobutyryl chloride 
• 7719-09-7 thionyl chloride 
• 105-74-8 dilauryl peroxide 
• 7659-45-2 3-chloro-2-methylpropanenitrile 

Downstream Products

• 79-41-4 poly(methacrylic acid) 
• 7623-10-1 2-methyl-3-chloropropionyl chloride 
• 26473-47-2 2-methyl-3-sulfanylpropanoic acid 
• 127756-64-3 3-chloro-N-(4-methoxyphenyl)-2-methylpropionamide 

Relevant articles and documents

Preparation method of 3-acetylthio-2-methylpropionic acid

The invention discloses a preparation method of 3-acetylthio-2-methyl propionic acid. The preparation method comprises the following steps: carrying out a reaction on a compound (methacrylic acid) represented by a formula I and hydrogen halide to obtain a compound represented by a formula II, carrying out a reaction on the compound represented by the formula II and sodium hydrosulfide or sodium sulfide to obtain a compound represented by a formula III, and performing an acetylation reaction to obtain a compound represented by a formula IV (3-acetylthio-2-methylpropionic acid). The process forsynthesizing the 3-acetylthio-2-methyl propionic acid has the advantages of being low in cost, easy and convenient to operate, good in yield, environmentally friendly and suitable for industrial production.

HYDROCHLORINATION OF ELECTRON-DEFICIENT ALKENES

The present invention pertains to a method for the hydrochlorination of electron deficient alkenes, particularly alkenes having the functional groups COOH, CONH2, and CN. Specific alkenes discussed include acrylic acid, crotonic acid, methacrylic acid, acrylonitrile, acrylamide, and methacrylonitrile. The alkene is combined with a primary or secondary alcohol (e.g., isopropanol) and an acid chloride (e.g., acetyl chloride) under conditions suitable to chlorinate the alkene. Products formed by the invention include 3-chorosubstituted carbonyl compounds such as 3-chlorpropionic acid (3-CPA), 3-chloropropionamide (3-CPAD), and 3-chloropropionitrile among other products.

Optically active units for the synthesis of the side chain of (R,R,R)-α-tocopherol and their preparation

(2R,6R)-1-Chloro-2,6,10-trimethyl-undecane I, (R)-(+)-β-chloro-isobutyric acid II, (S)-(+)-1-bromo-3-chloro-2-methylpropane IV and (2R)-(+)-1-chloro-2,6-dimethyl-heptane V are novel optically active units for the synthesis of the side chain of (R,R,R)-α-tocopherol. In the process according to the invention, the optically active C14 -chloride I is obtained in 6 simple reaction steps starting from II, via the novel intermediates IV and V, in accordance with the following equation: STR1