Ammonia → HCID 10308770, compound

Participants

Reaction Steps

3-[3-Fluoro-4-(5-oxo-5,6-dihydro-4H-[1,3,4]thiadiazin-2-yl)phenyl]-2-oxo-5-oxazolidinecarboxylic acid butyl ester (Step 6, 0.300 g, 0.758 mmol) is dissolved in 2M ammonia in methanol solution (8 ml) and stirred overnight at room temperature. The reaction is concentrated under vacuum and purified by PTLC (10% methanol/CH2Cl2) to give the title compound as a white solid (0.22 g, 87%), mp 249-251° C.; 1H NMR (300 Mhz, CDCl3) δ 3.59 (s, 2H), 4.04 (dd, 1H), 4.30 (t, 1H), 5.05 (dd, 1H), 7.49-7.72 (m, 4H), 7.88 (br s, 1H), 11.63 (s, 1H); MS (m/z) for C13H11FN4O4S: [M+H]+=339.

Provenance & Evidence