Tetrahydrofuran → HCID 117736877, compound

Participants

Reaction Steps

A solution of perfluorophenyl 1-(4-bromo-5-chloro-2-methoxyphenyl)-7-fluoro-2-oxo-1,2-dihydroquinoline-6-sulfonate (0.440 g, 0.700 mmol), 3-aminoisoxazole (0.057 ml, 0.770 mmol) and THF (7.0 ml) was cooled in an ice-bath for 15 min, then lithium bis(trimethylsilyl)amide (1M in TI-IF) (1.47 ml, 1.47 mmol) was added dropwise. After 60 min, the mixture was diluted with 1N aq. HCl and EtOAc. The aq. layer was extracted with EtOAc (2×). The combined organic extracts were dried over magnesium sulfate, filtered, and concentrated. The residue was concentrated and then triturated with in Et2O. The resulting suspension was sonicated, then filtered. The collected solid was washed with Et2O (2×), dried under a stream of N2 (g), then dried under vacuum to give 1-(4-bromo-5-chloro-2-methoxyphenyl)-7-fluoro-N-(isoxazol-3-yl)-2-oxo-1,2-dihydroquinoline-6-sulfonamide (0.370 g, 0.700 mmol, 100% yield) as an off white solid. m/z (ESI) 527.7 (M+H)+.

Provenance & Evidence