Water → HCID 12366402, compound

Participants

Reaction Steps

A solution of 6,7-dimethyl naphtho-1,4-quinone (20.0 g.; 0.107 mole) in glacial acetic acid (250 ml) was stirred during the dropwise addition of bromine (5.6 ml; 17.2 g; 0.107 mole) in acetic acid (10 ml.) at 15° C and allowed to stir at this temperature for a further 2 hours. Anhydrous sodium acetate (20 g) was added and the mixture stirred at 100° C for 11/2 hours after an initial half hour period at room temperature; cooled, poured into water (2.5 l) and the yellow bromo product filtered off. It had m.p. (ethanol, chloroform) 156°-159° C. (Found; C, 53.47; H, 3.39; Br. 30.23; C12H9BrO2 requires; C, 54.36; H, 3.42; Br, 30.14%).

Provenance & Evidence