Dimethyl (4-methoxybenzylidene)malonate(CAS: 7443-25-6)

Dimethyl (4-methoxybenzylidene)malonate is a crystalline compound with a molecular weight of approximately 220.24 g/mol. It has a high solubility in organic solvents such as methanol and ethanol but is less soluble in water. Chemically, it is relatively stable but can undergo hydrolysis under acidic or basic conditions. Its melting point is around 60-62°C, and it is slightly soluble in water.

Dimethyl (4-methoxybenzylidene)malonate is typically synthesized through an esterification reaction of malonoyl chloride with 4-methoxybenzyl alcohol. This process is catalyzed by an acid, such as sulfuric acid, and proceeds with a high yield of around 85-90%. The reaction is carried out at room temperature and is known for its good selectivity.

Dimethyl (4-methoxybenzylidene)malonate is widely used in the pharmaceutical industry for the synthesis of certain drugs, particularly in the preparation of prodrugs. It is also utilized in the polymer industry as a monomer for the synthesis of specific polymers with unique properties. Additionally, it has applications in the production of sensors and as a precursor in semiconductor manufacturing processes.

When handling Dimethyl (4-methoxybenzylidene)malonate, it is important to use appropriate personal protective equipment (PPE), including gloves, safety goggles, and a lab coat. Work should be conducted in a well-ventilated area or a fume hood to minimize inhalation risks. Spills should be handled carefully using appropriate absorbent materials, and the area should be thoroughly cleaned. Always consult the Safety Data Sheet (SDS) for detailed safety information and emergency procedures.