3-Methyl-2-cyclopenten-1-one(CAS: 2758-18-1)

3-Methyl-2-cyclopenten-1-one (CAS: 2758-18-1) is a colorless liquid with a fruity odor. It has a molecular weight of approximately 110.19 g/mol. The compound is soluble in water and ethanol. Chemically, it is moderately reactive with oxidizing agents and can undergo various organic reactions such as addition and condensation reactions.

3-Methyl-2-cyclopenten-1-one is commonly synthesized via the Wittig reaction or by the Claisen condensation of 3-methylcyclopent-2-en-1-one. The Wittig reaction involves the use of triphenylphosphine and methyl methylphosphonate. The Claisen condensation typically requires a base like sodium hydroxide and heating to achieve high yield.

3-Methyl-2-cyclopenten-1-one is used in the pharmaceutical industry as a precursor for the synthesis of certain drugs. It also finds applications in the polymer industry as a monomer for producing various polymers. Additionally, it is utilized in the fragrance and flavor industry due to its fruity aroma. In electronics, it is used in the production of semiconductors and sensors.

When handling 3-Methyl-2-cyclopenten-1-one (CAS: 2758-18-1), it is important to wear appropriate personal protective equipment (PPE) such as gloves, goggles, and a lab coat. Work should be conducted in a well-ventilated area or fume hood to avoid inhalation. In case of a spill, neutralize with sodium bicarbonate and dispose of according to local regulations. Always refer to the safety data sheet (SDS) for detailed information on handling and storage.