[4-(Trifluoromethyl)phenyl]acetic acid(CAS: 32857-62-8)

[4-(Trifluoromethyl)phenyl]acetic acid is a white or light yellow crystalline solid with a molecular weight of approximately 252.10 g/mol. It has a melting point of 125-128°C and is slightly soluble in water but soluble in common organic solvents like chloroform and acetone. It is a weak acid and exhibits typical reactivity for carboxylic acids, such as esterification and acylation reactions.

[4-(Trifluoromethyl)phenyl]acetic acid can be synthesized by reacting 4-(trifluoromethyl)benzaldehyde with acetic anhydride in the presence of a catalytic amount of acid, such as sulfuric acid. The reaction is typically performed at room temperature and yields a 90% pure product. The reaction is selective and produces a single diastereomer, with good yield.

[4-(Trifluoromethyl)phenyl]acetic acid finds application in the pharmaceutical industry for the synthesis of various drug molecules due to its unique substituent. It is also used in the polymer industry as a monomer for the synthesis of fluorinated polymers. Additionally, it is employed in the production of sensors and semiconductors for its electronic properties.

When handling [4-(Trifluoromethyl)phenyl]acetic acid, wear appropriate personal protective equipment (PPE) such as gloves, safety goggles, and a lab coat. Work in a well-ventilated area or a fume hood. Ensure proper storage in a cool, dry place away from heat and incompatible materials. In case of spill, neutralize any acid with a basic solution and dispose of according to local regulations. Refer to the Safety Data Sheet (SDS) for detailed emergency procedures and disposal methods.