9-Oxo-9H-fluorene-4-carboxylic acid(CAS: 6223-83-2)

9-Oxo-9H-fluorene-4-carboxylic acid is a white crystalline solid with a molecular weight of approximately 259.21 g/mol. It has a high melting point around 220°C and is slightly soluble in water. This compound is reactive towards nucleophiles and can form esters and amides. It exhibits good solubility in organic solvents like dichloromethane and acetonitrile, making it useful in various chemical reactions.

9-Oxo-9H-fluorene-4-carboxylic acid can be synthesized via the oxidation of 9H-fluorene-4-carboxylic acid. Common methods include the use of peroxyacids like peracetic acid or sodium hypochlorite in aqueous media. The reaction typically provides high yields and good selectivity, making it a reliable method for industrial production.

9-Oxo-9H-fluorene-4-carboxylic acid is primarily used in the pharmaceutical industry as a starting material for the synthesis of bioactive compounds. It also finds applications in the polymer industry for developing high-performance polymers and in the semiconductor industry for the production of organic light-emitting diodes (OLEDs). Additionally, it is utilized in sensor technology for detecting specific chemical species.

Proper handling of 9-Oxo-9H-fluorene-4-carboxylic acid requires the use of personal protective equipment (PPE) including gloves, goggles, and a lab coat. Work should be carried out in a well-ventilated environment or a fume hood to minimize inhalation risks. Spills should be cleaned up using appropriate absorbent materials, and the area should be flushed with water. Always refer to the Safety Data Sheet (SDS) for detailed information on handling and emergency response procedures.