Hydrogen Bromide → HCID 18996985, compound

Participants

Reaction Steps

N-(9,10-Dihydro-4,5-dimethoxy-9,10-dioxoanthracen-2-yl)methanesulphonamide (1.45 g) was suspended in a 48% solution of hydrobromic acid in water (30 ml) and heated to reflux under an atmosphere of nitrogen for 60 hours. The mixture was poured into water (100 ml) generating a precipitate which was collected by filtration. Drying in vacuo over silica gel yielded N-(9,10-dihydro-4,5-dihydroxy-9,10-dioxoanthracen-2-yl)methanesulphonamide at 92% purity (HPLC) as a brown powder, m.p. >300° C.

Provenance & Evidence