Ethyl 4-oxo-4H-pyrido[1,2-a]pyrimidine-3-carboxylate(CAS: 32092-18-5)

Ethyl 4-oxo-4H-pyrido[1,2-a]pyrimidine-3-carboxylate is a crystalline solid with a molecular weight of approximately 242.26 g/mol. It has limited water solubility and good solubility in organic solvents. The compound is moderately reactive, particularly toward nucleophiles and bases. It is stable under normal storage conditions but may degrade upon prolonged exposure to light or high temperatures.

Ethyl 4-oxo-4H-pyrido[1,2-a]pyrimidine-3-carboxylate is typically synthesized via a multistep process involving the condensation of ethyl 3-chloro-4-oxopyrimidine-2-carboxylate with an appropriate pyridine derivative. This reaction is usually catalyzed by a Lewis acid and occurs in organic solvents. High yield and selectivity are achievable under optimized conditions.

Ethyl 4-oxo-4H-pyrido[1,2-a]pyrimidine-3-carboxylate is primarily used in the pharmaceutical industry for the synthesis of various bioactive compounds. It also finds applications in the formulation of certain agricultural chemicals and as a precursor in the development of new materials, such as polymers and sensors.

When handling Ethyl 4-oxo-4H-pyrido[1,2-a]pyrimidine-3-carboxylate, it is essential to wear appropriate personal protective equipment (PPE), including gloves and safety goggles. The compound should be stored in a cool, dry place away from direct sunlight and heat sources. Spills should be cleaned up immediately using appropriate absorbents, and the area should be well-ventilated. Always consult the Safety Data Sheet (SDS) for detailed handling and emergency procedures.