4-Chloro-2,5-dimethylpyrimidine(CAS: 75712-74-2)

4-Chloro-2,5-dimethylpyrimidine is a white crystalline solid with a molecular weight of approximately 183.63 g/mol. It has a high melting point of 152-154°C and is poorly soluble in water but soluble in organic solvents like ethanol and acetone. Chemically, it is moderately reactive, particularly towards nucleophiles. It is used as a building block in organic synthesis and pharmaceuticals.

4-Chloro-2,5-dimethylpyrimidine is typically synthesized via the Wittig reaction or by the reduction of a corresponding N-protected pyrimidine. The Wittig reaction involves the condensation of a dialkylphosphite with a pyrimidine derivative. Alternatively, it can be obtained by reducing 2,5-dimethylpyrimidazine chloride using stannous chloride as a catalyst.

4-Chloro-2,5-dimethylpyrimidine is used in the pharmaceutical industry as a precursor for the synthesis of various drugs. It also finds applications in the polymer industry, particularly in the production of biodegradable polymers. Additionally, it is used in semiconductor manufacturing and as a sensor component in analytical chemistry.

When handling 4-Chloro-2,5-dimethylpyrimidine, wear appropriate personal protective equipment (PPE) such as gloves, goggles, and a lab coat. Work in a well-ventilated area or fume hood to minimize inhalation risks. If a spill occurs, neutralize it with an appropriate chemical and dispose of it according to local regulations. Always refer to the Safety Data Sheet (SDS) for specific handling and disposal instructions.