3-Bromobenzyl bromide → 1-(3-Bromo-benzyl)-3-(3-fluoro-4-methoxy-benzoyl)-6-methyl-1H-[1,5]naphthyridin-4-one

Participants

Reaction Steps

Experimental conditions analogous to those described for Step 3 of Example 1 were used with 112 mg (0.358 mmol) of 3-(3-Fluoro-4-methoxy-benzoyl)-6-methyl-1H-[1,5]naphthyridin-4-one, 107.5 mg (0.430 mmol) of 3-bromobenzyl bromide, 17.2 mg (0.430 mmol, 60% dispersion in oil), and 2 mL of N,N-dimethylformamide. The crude product was purified on the reverse phase HPLC with a C18 column, gradient of 20-70% acetonitrile—0.1% TFA to yield 67 mg of 1-(3-Bromo-benzyl)-3-(3-fluoro-4-methoxy-benzoyl)-6-methyl-1H-[1,5]naphthyridin-4-one. LC-MSD, m/z for C24H18BrFN2O3 [M+H]: 481.05. LC retention time on HPLC, C18 column gradient 20-95% acetonitrile with 0.1% TFA in 4 minutes: 2.7 min

Provenance & Evidence