4-Oxo-4-(1-pyrenyl)butanoic acid(CAS: 7499-60-7)

4-Oxo-4-(1-pyrenyl)butanoic acid is a crystalline solid with a high molecular weight. It has a low solubility in water but is soluble in organic solvents like dichloromethane and ethanol. The compound is moderately reactive, particularly towards nucleophilic attacks. It has a pKa of approximately 4.5, indicating a weak acidic nature.

4-Oxo-4-(1-pyrenyl)butanoic acid is synthesized via a multi-step procedure involving the formation of an intermediate ester, followed by hydrolysis to yield the carboxylic acid. Commonly, the reaction is catalyzed by a strong acid like sulfuric acid, with high selectivity and yield (around 85%).

4-Oxo-4-(1-pyrenyl)butanoic acid is used in the pharmaceutical industry for developing light-sensitive drugs and in the semiconductor industry for creating photoresists. It also finds applications in sensor technology and as a precursor in polymer synthesis.

When handling 4-Oxo-4-(1-pyrenyl)butanoic acid, appropriate personal protective equipment (PPE) should be worn, including gloves, goggles, and a lab coat. Work should be conducted in a fume hood to minimize inhalation risk. Spills should be cleaned up immediately using appropriate absorbent materials, and the area should be well-ventilated. Always refer to the Safety Data Sheet (SDS) for detailed safety information.