Gamma-Butyrolactone → 1(2H)-Naphthalenone, 3,4-dihydro-5,8-dimethyl-

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Reaction Steps

After the completion of the first reaction in Example 1, the supernatant was removed, the remained catalyst was washed with 100 ml of hexane with stirring at room temperature. The hexane supernatant was removed, followed by drying under reduced pressure at 50° C. 100 ml of p-xylene (799 mmol) and 1 ml of γ-butyrolactone (14.8 mmol) as raw materials were charged again and then reacted at 196° C. for 3 hours. As a result, 5,8-dimethyltetralone (yield based on γ-butyrolactone: 28.7%) was obtained. The effect of regenerating the catalyst was exerted.

Provenance & Evidence