3-Fluoro-5-hydroxybenzoic acid(CAS: 860296-12-4)

3-Fluoro-5-hydroxybenzoic acid is a crystalline solid with a molecular weight of 182.05 g/mol. It has a pKa of approximately 3.2 and shows moderate solubility in water (1 g/100 mL at 25°C). This compound is relatively stable under normal conditions but can react with bases to form the corresponding salts. It is slightly reactive towards nucleophiles and can undergo esterification and other acid-catalyzed reactions.

3-Fluoro-5-hydroxybenzoic acid can be synthesized through the protection and subsequent deprotection of 5-hydroxybenzoic acid. This involves protecting the carboxylic acid group with a suitable reagent, followed by introducing a fluoro group using fluorination techniques. Common methods include nucleophilic substitution or electrophilic aromatic substitution strategies, with yield typically around 70-80%.

3-Fluoro-5-hydroxybenzoic acid is primarily used in the pharmaceutical industry for the synthesis of various drug intermediates. It also finds applications in the production of certain polymer additives, where its functional groups can enhance specific properties. Additionally, it is used in the development of sensors and semiconductors due to its unique chemical properties.

When handling 3-Fluoro-5-hydroxybenzoic acid, it is important to wear appropriate personal protective equipment (PPE), including gloves and safety goggles. Work should be conducted in a well-ventilated fume hood to minimize inhalation risks. Spills should be cleaned up immediately using appropriate disposal methods. Always consult the material safety data sheet (MSDS) for detailed safety information and follow all local safety regulations.