Perchloric Acid → HCID 20442864, compound

Participants

Reaction Steps

The same procedure as in Example 6 was repeated by using 226 mg of 2,6-diethoxy-4-methoxy-4-methyl-2,5-cyclohexadienone and 10 mg of perchloric acid, recovering 180 mg of an oily crude product. The crude product was purified by silica gel column chromatography using a 20:1 benzene-ethyl acetate mixture, giving 175 mg of 2,6-diethoxy-4-methylidene-2,5-cyclohexadienone in 90% of theoretical yield. The compound thus obtained was identified by NMR.

Provenance & Evidence