3,5-Difluoroaniline → 8-[(1R)-1-(3,5-difluoroanilino)ethyl]-N,N-dimethyl-2-morpholin-4-yl-4-oxochromene-6-carboxamide

Participants

Reaction Conditions

Reaction Steps

To a suspension of 8-(1-bromoethyl)-N,N-dimethyl-2-morpholino-4-oxo-4H-chromene-6-carboxamide hydrobromide (3.63 g, 7.41 mmol, as described in Example 3.03) in DMF (35 mL) under nitrogen was added 3,5-difluoroaniline (3.82 g, 29.62 mmol). The resulting yellow solution was stirred at 50° C. for 5 hrs. The reaction mixture was concentrated to dryness, then purified by flash chromatography on silica gel eluting with 1 to 7% methanol in DCM. The solvent was evaporated to dryness to afford 8-(1-(3,5-difluorophenylamino)ethyl)-N,N-dimethyl-2-morpholino-4-oxo-4H-chromene-6-carboxamide (2.32 g, 68.5%) as a pale yellow solid. Mass Spectrum: M+H+ 458. NMR Spectrum: (DMSOd6) 1.52 (d, 3H), 2.74 (s, 3H), 2.95 (s, 3H), 3.50-3.64 (m, 4H), 3.70-3.79 (m, 4H), 4.97-5.05 (m, 1H), 5.60 (m, 1H), 6.15 (dd, 2H), 6.22 (tt, 1H), 6.96 (d, 1H), 7.54 (d, 1H), 7.81 (d, 1H).

Provenance & Evidence