2,5-Dimethyl-2,4-dihydro-3H-pyrazol-3-one(CAS: 2749-59-9)

2,5-Dimethyl-2,4-dihydro-3H-pyrazol-3-one (CAS: 2749-59-9) is a white crystalline solid with a molecular weight of approximately 128.15 g/mol. It has a low solubility in water but is soluble in organic solvents like ethanol and acetone. This compound is moderately reactive, showing typical reactivity of pyrazoles, such as nucleophilic substitution and condensation reactions.

2,5-Dimethyl-2,4-dihydro-3H-pyrazol-3-one is typically synthesized through the condensation of methyl isonicotinate with methyl isocyanate in the presence of a base such as potassium carbonate. The reaction is carried out under mild conditions, yielding the compound with good selectivity and high yield.

2,5-Dimethyl-2,4-dihydro-3H-pyrazol-3-one (CAS: 2749-59-9) is used in various industries, including pharmaceuticals for its potential as a drug intermediate, and in polymer chemistry for its role as a cross-linking agent. It also finds applications in the production of sensors and semiconductors due to its unique chemical properties.

When handling 2,5-Dimethyl-2,4-dihydro-3H-pyrazol-3-one (CAS: 2749-59-9), it is essential to wear appropriate personal protective equipment (PPE) such as gloves and goggles. The compound should be stored in a cool, dry place away from direct sunlight and heat sources. In case of a spill, use appropriate containment measures and follow safety data sheet (SDS) guidelines for proper disposal. Handling should be done in a well-ventilated area or under a fume hood to minimize exposure risks.