Sodium hydride → 3-(3,4-dimethyl-benzoyl)-1-(2-fluoro-benzyl)-2,3-dihydro-1H-quinolin-4-one

Participants

Reaction Steps

In 3 mL of anhydrous dimethylformamide was suspended 16 mg (0.4 mmol) of sodium hydride (60%), 86 mg (0.31 mmol) of 3-(3,4-dimethyl-benzoyl)-2,3-dihydro-1H-quinolin-4-one 3a was added and the mixture was stirred at rt. After 30 minutes, 75.6 mg (0.40 mmol) of 2-fluorobenzylbromide was added and the reaction was stirred at room temperature for 1 hour. The reaction mixture was quenched by the addition of 10 mL of water. The crude product precipitated out were isolated by filtration and purified by flash chromatography to yield 25 mg of colorless solid 41: LC-MSD, m/z for C25H20FNO2 [M+H]+=386.4, [M+2H]+=387.4; Reverse phase HPLC (gradient acetonitrile 0.1% TFA 20-95% in 4 min) retention time=2.526 min; 1H NMR (400 MHz, CDCl3/HCl): δ 2.2-2.3 (d, 6H), 5.7 (s, 2H), 7.1-7.3 (m, 4H), 7.3-7.4 (m, 1H), 7.4-7.5 (m, 2H),7.54 (s, 1H), 7.6-7.66 (d, 1H), 7.67-7.74 (t, 1H), 8.2 (d, 1H), 8.58 (s, 1H).

Provenance & Evidence