6-Chloro-1,3-dimethyl-2,4(1H,3H)-pyrimidinedione(CAS: 6972-27-6)

6-Chloro-1,3-dimethyl-2,4(1H,3H)-pyrimidinedione, also known as chloropyrimethium, is a white crystalline solid with a molecular weight of approximately 190.01 g/mol. It has a limited solubility in water and good solubility in organic solvents. This compound is highly reactive, particularly towards nucleophiles and can undergo nucleophilic substitution reactions. It is stable under normal storage conditions but should be protected from moisture and heat.

6-Chloro-1,3-dimethyl-2,4(1H,3H)-pyrimidinedione is typically synthesized via the chlorination of 1,3-dimethyl-2,4(1H,3H)-pyrimidinedione. The reaction is usually catalyzed by Lewis acids such as aluminum chloride or ferric chloride. The yield is generally good, and the reaction is highly selective for the chlorination at the expected position. The final product is purified by recrystallization from an appropriate solvent.

6-Chloro-1,3-dimethyl-2,4(1H,3H)-pyrimidinedione is used in various industries. It is a key intermediates in the pharmaceutical industry, particularly in the synthesis of antifungal drugs. It also finds applications in the polymer industry as a stabilizer and in the production of certain types of polymers. Additionally, it is used in the development of sensors and as a precursor for semiconductors.

When handling 6-Chloro-1,3-dimethyl-2,4(1H,3H)-pyrimidinedione, it is essential to use appropriate Personal Protective Equipment (PPE), including gloves, safety goggles, and a lab coat. It should be used in a well-ventilated area or a fume hood to minimize inhalation risks. Spills should be immediately cleaned up with appropriate absorbent materials, and the area should be thoroughly rinsed. The Material Safety Data Sheet (MSDS) should be consulted for detailed safety information and emergency procedures.