Methyl iodide → HCID 71152272, compound

Participants

Reaction Steps

To a solution of (3aS,4S,5R,6R,7aS)-4-fluoro-5-hydroxy-6-(hydroxymethyl)hexahydrobenzo[d]oxazole-2(3H)-thione (490 mg, 2.22 mmol) in EtOH (8 mL) was added MeI (630 mg, 4.43 mmol) and 5 N NaOH (0.58 mL, 2.9 mmol). The mixture was stirred at room temperature for 2 h. The solvents were evaporated to give the crude product. This was purified by SiO2 column, eluted with 10%-20% MeOH in DCM to give (3aS,4S,5R,6R,7aS)-4-fluoro-6-(hydroxymethyl)-2-(methylthio)-3a,4,5,6,7,7a-hexahydrobenzo[d]oxazol-5-ol (370 mg, 71%) as a pale yellow solid. 1H NMR (400 MHz, CDCl3) δ 4.78 (ddd, J=52.1 Hz, 3.8 Hz, 1.6 Hz, 1H), 4.64-4.68 (m, 1H), 4.03 (ddd, J=25.8 Hz, 7.6 Hz, 3.9 Hz, 1H), 3.91 (dd, J=10.9 Hz, 3.7 Hz, 1H), 3.61-3.71 (m, 2H), 2.48 (s, 3H), 2.17-2.30 (m, 2H), 1.95-2.02 (m, 1H), 1.65-1.72 (m, 1H).

Provenance & Evidence