m-Xylyl bromide → 3-(3,4-Dimethyl-benzoyl)-1-(3-methyl-benzyl)-2,3-dihydro-1H-quinolin-4-one

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Reaktionsschritte

Compound 4m was prepared following the procedure outlined in Step 3 of Example 1 using 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, 3 mL of anhydrous dimethylformamide, and 74.0 mg (0.40 mmol) of 3-methylbenzylbromide. The crude product 4m was purified by flash chromatograph to yield 55 mg of colorless solid: LC-MSD, m/z for C26H23NO2, [M+H]+: 382.5, [M+H]+: 383.5; Reverse phase HPLC (gradient acetonitrile 0.1% TFA 20-95% in 4 min) retention time=2.628 min; 1H NMR (400 MHz, CDCl3/HCl): δ 2.3-2.4 (t, 9H), 5.4 (s, 2H), 7.0 (d, 2H), 7.12 (d, 1H), 7.18 (d, 1H), 7.25 (d, 1H), 7.4 (t, 2H), 7.58 (m, 2H), 7.65 (s, 1H), 8.26 (s, 1H), 7.48 (s, 1H).

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