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ChemicalBook CAS DataBase List 3-methylcyclopent-2-en-1-one
2758-18-1

3-methylcyclopent-2-en-1-one synthesis

11synthesis methods
By dehydrohalogenation of 2-chloro-1-methyl-cyclopentan-3-one.
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Yield:2758-18-1 98%

Reaction Conditions:

with calcium(II) oxide in lithium hydroxide monohydrate at 150; for 14 h;Inert atmosphere;Reagent/catalyst;Temperature;Solvent;

Steps:

1-20 Example 1

3g of 2,5-hexanedione and 10mL of water were added to a 25mL three-necked flask. Under an inert atmosphere (selected nitrogen), the temperature was increased to 150 ° C, and then 400mg of CaO was added. After 14 hours of reaction, the product was analyzed by gas chromatography. The yield of methylcyclopentenone reached 98%.

References:

CN110550993,2019,A Location in patent:Paragraph 0048-0052

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