m-Xylyl bromide → 3-(3,4-dimethyl-benzoyl)-6-fluoro-1-(3-methyl-benzyl)-1H-quinolin-4-one

関与物質

反応条件

反応手順

Compound 4uu was prepared following the procedure outlined in Step 3 of Example 1. Briefly described here, 0.050 g (0.169 mmol) of 3-(3,4-dimethyl-benzoyl)-6-fluoro-1H-quinolin-4-one 3j, 0.4 mL of potassium hexamethyldisilazide (0.5 M in toluene, 0.203 mmol) and 37.6 mg (0.203 mmol) of 3-methylbenzyl bromide were combined in 1.5 mL of tetrahydrofuran and heated at 60° C. for 3 h. Purification of the crude product using flash chromatography (30-50% ethyl acetate in hexane) yielded 52.2 mg of 3-(3,4-dimethyl-benzoyl)-6-fluoro-1-(3-methyl-benzyl)-1H-quinolin-4-one as a white solid 4uu: LC-MSD, m/z for C26H22FNO2, [M+H]=400.5; Reverse phase HPLC gradient, 20-95% acetonitrile with 0.1% TFA in 4 minutes, retention time=2.9 min; 1H NMR (400 MHz, CDCl3): δ 8.26 (1H, s), 8.11 (1H, m), 7.64 (1H, s), 7.56 (1H, m), 7.38 (1H, m), 7.32-7.23 (2H, m), 7.18 (1H, m), 7.15 (1H, m), 6.97 (2H, m), 5.37 (2H, s), 2.33 (3H, s), 2.32 (3H, s), 2.31 (3H, s).

情報源と証拠