Hydrochloric Acid → 6-(Benzyloxy)-7-methoxyquinazolin-4(1H)-one

Participants

Reaction Conditions

Reaction Steps

Methyl 2-amino-5-(benzyloxy)-4-methoxybenzoate (5.0 g) was dissolved in N,N-dimethylformamide (150 ml) and methanol (30 ml). Formamide (3.5 ml) and sodium methoxide (2.8 g) were added to the solution. The mixture was heated to 100° C. and was then stirred overnight. The reaction solution was then cooled to room temperature, and 10 ml of water was then added. The reaction solution was neutralized with a 1 M aqueous hydrochloric acid solution to precipitate a solid. The solid was collected by filtration, was washed with water and ether, and was then dried through a vacuum pump to give 3.7 g (yield 76%) of the title compound. 1H-NMR (DMSO-d6, 400 MHz): δ 3.92 (s, 3H), 5.21 (s, 2H), 7.16 (s, 1H), 7.33-7.49 (m, 5H), 7.55 (s, 1H), 7.99 (s, 1H), 12.06 (br, 1H).

Provenance & Evidence