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

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

11synthesis methods

Product Name:3-methylcyclopent-2-en-1-one
CAS Number:2758-18-1
Molecular formula:C6H8O
Molecular Weight:96.13

By dehydrohalogenation of 2-chloro-1-methyl-cyclopentan-3-one.

110-13-4 Synthesis

110-13-4
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2758-18-1
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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