1-Phenyl-5-(trifluoromethyl)-1H-pyrazole-4-carboxylic acid(CAS: 98534-81-7)

1-Phenyl-5-(trifluoromethyl)-1H-pyrazole-4-carboxylic acid is a crystalline solid with a molecular weight of approximately 281.14 g/mol. It has a low solubility in water but is more soluble in organic solvents like DMSO and acetonitrile. Chemically, it is known for its stability and reactivity in acid and base conditions, but it is less reactive in general compared to other carboxylic acids.

1-Phenyl-5-(trifluoromethyl)-1H-pyrazole-4-carboxylic acid is usually synthesized through a multi-step process. The key steps involve the formation of the pyrazole ring via condensation reactions, followed by the introduction of the trifluoromethyl group and the carboxylation step. Common catalysts include triphenylphosphine and various carboxylation agents like PCl5 or PMPCl. The overall yield can be improved by optimizing reaction conditions and using appropriate solvents.

1-Phenyl-5-(trifluoromethyl)-1H-pyrazole-4-carboxylic acid is primarily used in the pharmaceutical industry as a precursor for drug development. It also finds applications in polymer synthesis, where its unique chemical properties make it suitable for functional polymers. Additionally, it can be used in the production of advanced sensors and semiconductors due to its stability and reactivity.

When handling 1-Phenyl-5-(trifluoromethyl)-1H-pyrazole-4-carboxylic acid, it is crucial to take appropriate safety measures. Always wear personal protective equipment (PPE) such as gloves, goggles, and a lab coat. Work should be conducted in a well-ventilated environment or a fume hood to minimize exposure to any fumes. Spills should be immediately cleaned up with appropriate materials, and the area should be well-ventilated. For detailed safety information, refer to the Material Safety Data Sheet (MSDS/SDS) for this compound.