Perchloric Acid → HCID 13151607, compound

Participants

Reaction Steps

0.4 ml of perchloric acid (70% strength) was added dropwise with stirring in 5 minutes to a solution of 7 g of 1,3-dibutyl-7-(3,4-epoxybutyl)xanthine in 300 ml of a mixture of ethylene glycol dimethyl ether/water (volume ratio 3:2) at room temperature. After stirring at room temperature for 45 hours, the mixture was neutralized with sodium bicarbonate and the solution was evaporated. The residue was taken up with methylene chloride and purified by column chromatography on silica gel with a mixture of chloroform and ethanol (volume ratio 8:2) as the mobile phase and by recrystallization from methylene chloride/petroleum ether.

Provenance & Evidence