Benzyl Bromide → HCID 22496209, compound

Participants

Reaction Steps

A solution of 6-phenyl-1H-thieno[3,2-d][1,3]oxazine-2,4-dione (1 g, 4.1 mmol) and anhydrous sodium carbonate (477 mg, 4.5 mmol) diluted in 15 ml of anhydrous dimethylacetamide was stirred for one hour under nitrogen before adding benzyl bromide (785 mg, 4.5 mmol). The mixture was stirred overnight at room temperature. 912 mg (66.3%) of 1-benzyl-6-phenyl-1H-thieno[3,2-d][1,3]oxazine-2,4-dione were obtained as a pale yellow solid after filtration and washing the precipitate with acetone and pentane. NMR 1H (DMSO D6, 400 MHz): 7.8-7.76 ppm (m, 3H, Haro); 7.51-7.45 ppm (m, 3H, Haro); 7.43-7.41 ppm (m, 2H, Haro); 7.35-7.3 ppm (m, 2H, Haro); 7.28-7.24 ppm (m, 1H, Haro); 5.22 ppm (s, 1H, NCH2).

Provenance & Evidence