Sulfuric Acid → HCID 13443700, compound

Participants

Reaction Conditions

Reaction Steps

Methoxy-p-benzoquinone (0.50 g) and 2,3-dimethyl-1,3-butadiene (0.63 ml) were added to 23.0 mL of glacial acetic acid. The mixture was heated at 45° C. for 18.5 hrs. A chromic acid solution consisting of 1.85 g of Na2Cr2O7.2H2O, 1.16 mL water, and 0.09 mL of concentrated H2SO4 was then added, and the temperature was kept at approximately 67° C. for 1 hour. The product was precipitated by the addition of ice water, washed several times with cold water, and then dried over P2O5. A 71% yield (0.557 g) of 2-methoxy-6,7-dimethyl-1,4-naphthoquinone was obtained.

Provenance & Evidence