2-Ethoxy-3,4-dihydro-2H-pyran(CAS: 103-75-3)

2-Ethoxy-3,4-dihydro-2H-pyran is a colorless liquid with a molecular weight of approximately 110.17 g/mol. It has a moderate solubility in common organic solvents but is practically insoluble in water. This compound is relatively stable under normal conditions but can react with strong acids or bases to form other compounds. It can be isolated as a crystalline form with a melting point around 55-57°C.

2-Ethoxy-3,4-dihydro-2H-pyran can be synthesized via the condensation of ethyl acetoacetate with ethylene glycol. The reaction is usually catalyzed by acid or base and proceeds with good yield and selectivity. The resulting product can be purified by recrystallization or distillation.

2-Ethoxy-3,4-dihydro-2H-pyran is used in various industries, particularly in the pharmaceutical and polymer sectors. It serves as a precursor in the synthesis of drugs, dyes, and functional polymers. Additionally, it finds applications in the production of sensors and semiconductors due to its chemical reactivity and stability.

When handling 2-Ethoxy-3,4-dihydro-2H-pyran, it is important to wear appropriate personal protective equipment (PPE) such as gloves, goggles, and laboratory coat. This compound should be used in a well-ventilated area or fume hood. Spills should be cleaned up immediately using appropriate absorbents. Always refer to the Safety Data Sheet (SDS) for detailed handling and disposal instructions.