4-Chloro-1-methyl-3-nitro-2(1H)-quinolinone(CAS: 79966-13-5)

4-Chloro-1-methyl-3-nitro-2(1H)-quinolinone is a crystalline solid with a molecular weight of approximately 265.02 g/mol. It is slightly soluble in water and more soluble in organic solvents like ethanol and acetone. The compound shows moderate reactivity towards reducing agents and is susceptible to hydrolysis under basic conditions. It is stable under normal storage conditions but should be handled with caution due to its potential to react with moisture and air.

4-Chloro-1-methyl-3-nitro-2(1H)-quinolinone is typically synthesized through a multi-step process involving the nitration of 1-methyl-2(1H)-quinolinone followed by chlorination. The nitration step usually employs nitric acid in the presence of sulfuric acid as a catalyst, while the chlorination step uses chlorine gas or thionyl chloride. The overall process is exothermic and requires careful temperature control to ensure selectivity and yield.

4-Chloro-1-methyl-3-nitro-2(1H)-quinolinone is primarily used in the pharmaceutical industry as an intermediate in the synthesis of certain drugs. It is also utilized in the production of dyes and pigments due to its color properties. Additionally, it has potential applications in the polymer industry, where it can act as a curing agent or stabilizer.

When handling 4-Chloro-1-methyl-3-nitro-2(1H)-quinolinone, it is essential to wear appropriate personal protective equipment (PPE), including gloves, goggles, and a lab coat. Work should be conducted in a well-ventilated fume hood to minimize exposure to vapors. Spills should be immediately cleaned up using appropriate absorbents, and the area should be thoroughly rinsed with water. It is recommended to consult the Safety Data Sheet (SDS) for detailed emergency response procedures and storage guidelines.