Nitric Acid → 7-Bromo-6-nitroquinazolin-4(3H)-one

Participants

Reaction Steps

To a mixed solution of concentrated sulfuric acid (3 mL) and fuming nitric acid (3 mL) was added 7-bromo-3H-quinazolin-4-one (1.67 g, 7.42 mmol), and the mixture was heated at an oil bath temperature of 95° C. to 100° C. for 1 hr. The reaction mixture was poured into water (50 mL), and the product was collected by filtration, washed with water and dried under reduced pressure to give an about 5.6:1 mixture (1.3 g, 65%) of the objective 7-bromo-6-nitro-3H-quinazolin-4-one and 7-bromo-8-nitro-3H-quinazolin-4-one.

Provenance & Evidence