Sodium Hydroxide → HCID 118323976, compound

Participants

Reaction Steps

To a 500-mL three-neck round bottom flask with stir bar, heating mantel, reflux condenser with N2 outlet, septa with N2 inlet (needle) and temperature probe was added 6-(bis(4-chlorophenyl)methyl)-4-(1-(trifluoromethylsulfonyl)piperidin-4-ylamino)quinolin-2(1H)-one (6.06 g; 9.93 mmol) and THF (120 mL). To this solution was added LAH (pellets, 1.48 g; 38.99 mmol) at room temperature and the resulting mixture was heated to reflux while stirring for 8 hr and cooled room temperature overnight. A 2nd charge of LAH (0.45 g; 11.86 mmol) was added and the resulting mixture was maintained at 60° C. for 6 hr. A 3rd charge of LAH (0.45 g; 11.86 mmol) was added and the resulting mixture was maintained at 60° C. for additional 3 h. The reaction was stopped and cooled to 0° C. with ice bath. Water (2.6 mL) (Note: highly exothermic) was added, then 15% NaOH (2.6 mL), then water (7.5 mL). The resulting mixture was stirred for 15 min and then Na2SO4 and THF was added. The reaction solution was filtered through CELITE. The filtrate was concentrated and the resulting solid residue was triturated with DCM (10 mL)/diethyl ether (25 mL) in an ice bath for 20 min to yield 6-(bis(4-chlorophenyl)methyl)-4-(piperidin-4-ylamino)quinolin-2(1H)-one as a pink solid.

Provenance & Evidence