反应详情

After dissolving oxazolo[4,5-b]pyridin-2(3H)-one (5 g, 23.25 mmol) in N,N-dimethylformamide (100 ml), bromine (1.28 ml, 25.58 mmol) is slowly added. Stirring is maintained at room temperature for 2 hours. Water (50 ml) is then added to the reaction mixture; the title product is isolated after having been filtered, rinsed with a little water and dried in vacuo. The yield obtained is 90%. ##STR22##

1. additionis slowly added