HCID 13037820, compound → HCID 20449862, compound

Participants

Reaction Steps

Into 200 ml of chloroform, was dissolved 4.0 g of 4-hydroxy-5-propargyl-2-cyclopentenone. To the solution, was added 25 g of activated manganese dioxide and the mixture was stirred at room temperature for 4 hours. The reaction mixture was filtered and the residue on the filter was washed thoroughly with chloroform. The filtrate together with the washings was concentrated to obtain 3.6 g (91% yield) of 4-keto-5-propargyl-2-cyclopentenone, pale yellow in color.

Provenance & Evidence