CAS 717871-75-5

1H-Pyrazole-3-carbonylchloride, 4-chloro-

Description:

1H-Pyrazole-3-carbonyl chloride, 4-chloro- (CAS 717871-75-5) is a chemical compound characterized by its pyrazole ring structure, which is a five-membered aromatic heterocycle containing two nitrogen atoms. This compound features a carbonyl chloride functional group, indicating the presence of a carbonyl (C=O) directly bonded to a chlorine atom, making it a reactive acyl chloride. The presence of a chloro substituent at the 4-position of the pyrazole ring adds to its reactivity and potential applications in organic synthesis. Typically, compounds like this are utilized in the synthesis of various pharmaceuticals and agrochemicals due to their ability to participate in nucleophilic acyl substitution reactions. The compound is likely to be a solid at room temperature and may require careful handling due to the reactivity of the acyl chloride functional group, which can hydrolyze in the presence of moisture to form the corresponding carboxylic acid. Safety precautions should be taken when working with this compound, as it may be harmful if inhaled or if it comes into contact with skin.

Formula: C₄H₂Cl₂N₂O

Synonyms:

• 1H-Pyrazole-3-carbonyl chloride, 4-chloro- (9CI)
• 1H-Pyrazole-3-carbonyl chloride, 4-chloro-