Acetone → HCID 69517938, compound

Participants

Reaction Conditions

Reaction Steps

The Ethyl 6-chloro-7-(isobutylthio)-2-(trifluoromethyl)-2H-chromene-3-carboxylate (Example 7d) (0.47 g, 1.19 mmole) was dissolved in a mixture of acetone (10 mL) and water (10 mL) and cooled to 0° C. (ice bath). The reaction was treated with oxone (0.73 g, 1.19 mmole) and stirred at 0° C. for 10 minutes followed by warming to room temperature for 4 hours. The reaction mixture was diluted with water (20 mL) and extracted with EtOAc (2×50 mL). The combined extracts were washed with brine (50 mL), dried over MgSO4, filtered and concentrated in vacuo to give a yellow solid which was subject to HPLC (reverse phase) and eluted with 50-95% ACN/water with 0.05% TFA to give a yellow solid (0.4 g, 82%): LCMS m/z 411.0 (M+H). 1H NMR (CDCl3/400 MHz) 7.65 (s, 1H), 7.54 (s, 1H), 7.24 (s, 1H), 5.73 (q, 1H, J=7.0 Hz), 4.30 (m, 2H), 2.90 (m, 1H), 2.70 (m, 1H), 2.38 (m, 1H), 1.33 (m, 3H), 1.20 (m, 3H), 1.07 (m, 3H).

Provenance & Evidence