反应详情

温度

50 °C

A solution of Methoxylamine hydrochloride (1.02 g, 12.2 mmol) in H2O (5.0 mL) was treated with Potassium carbonate (0.421 g, 3.05 mmol) followed by 1H-pyrido[3,2-d][1,3]oxazine-2,4-dione (J. Med. Chem., 1996, 39, 4962-4703, 1.0 g, 6.1 mmol). This mixture was allowed to stir at 50° C. for ˜1 hour forming a suspension. The ppt was collected via filtration and the filtrate was stored in the freezer O/N allowing an additional 35 mg to be collected. The solids were combined to afford 257 mg of the title compound (22%). 1H NMR (400 MHz, DMSO-d6) d 11.62 (s, 1H), 7.75 (dd, J=1.4, 4.2 Hz, 1H), 7.23 (dd, J=4.2, 8.5 Hz, 1H), 7.15 (dd, J=1.4, 8.5 Hz, 1H), 6.74 (br. s., 2H), 3.65 (s, 3H).

1. customforming a suspension
2. filtrationThe ppt was collected via filtration
3. customto be collected