1,4-Dioxane hydrochloride → HCID 58160197, compound

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Reaction Steps

To 8-(2-fluoroethoxy)-4-phenyl-7-(tetrahydro-2H-pyran-2-yloxy)-2H-chromen-2-one was added 1.5 mL of a 4 M HCl dioxane solution. The mixture was stirred at rt for 30 min under Ar atmosphere and concentrated. The crude product was purified with chromatography (hexane/EtOAc) to afford 8-(2-fluoroethoxy)-7-hydroxy-4-phenyl-2H-chromen-2-one (AD-C-004S-WZ01055) as a white solid (24 mg, 90%). 1H NMR (400 MHz, CDCl3) δ 8.96 (s, 1H), 7.57-7.54 (m, 3H), 7.52-7.49 (m, 2H), 7.08 (dd, J=8.8, 1.2 Hz, 1H), 6.87 (dd, J=8.8, 1.2 Hz, 1 H), 6.11 (d, J=1.2 Hz, 1H), 4.86 (m, 1H), 4.74 (m, 1H), 4.50 (m, 1H), 4.43 (m, 1H); MS (ESI) m/z 301 (M+H+), 323 (M+H+).

Provenance & Evidence