5-(1-Hydroxyethylidene)-2,2-dimethyl-1,3-dioxane-4,6-dione(CAS: 85920-63-4)

5-(1-Hydroxyethylidene)-2,2-dimethyl-1,3-dioxane-4,6-dione is a white crystalline solid with a molecular weight of approximately 268.29 g/mol. It is moderately soluble in water and ethanol but has low solubility in most organic solvents. It exhibits low reactivity under normal conditions, but can undergo hydrolysis under basic conditions. Its melting point is around 160-162°C.

5-(1-Hydroxyethylidene)-2,2-dimethyl-1,3-dioxane-4,6-dione can be synthesized through the condensation of acetaldehyde and acetone followed by ring closure. The reaction is typically catalyzed by acids, yielding a pure product with a yield of around 75-80%. The product can also be obtained via the hydrolysis of 2,2-dimethyl-1,3-dioxane-4,6-dione with acetaldehyde.

5-(1-Hydroxyethylidene)-2,2-dimethyl-1,3-dioxane-4,6-dione is used in various industries, including pharmaceuticals, where it serves as a precursor in the synthesis of certain drugs. It is also utilized in the production of polymers and as a component in sensors and semiconductors due to its unique chemical properties.

Proper handling of 5-(1-Hydroxyethylidene)-2,2-dimethyl-1,3-dioxane-4,6-dione requires the use of personal protective equipment (PPE) such as gloves, goggles, and lab coats. It should be stored in a cool, dry place away from heat and direct sunlight. In case of a spill, use appropriate absorbent materials and ensure proper disposal. Always refer to the Safety Data Sheet (SDS) for detailed emergency procedures and handling recommendations.