Benzenesulfonyl chloride → N-{3-[4-Hydroxy-1-(3-methylbutyl)-2-oxo-1,2-dihydro-1,8-naphthyridin-3-yl]-1,1-dioxido-4H-1,2,4-benzothiadiazin-7-yl}benzenesulfonamide

Participants

Reaction Conditions

Reaction Steps

To the product of Example 205 (0.020 g, 0.047 mmol) in pyridine (0.2 mL) was added benzenesulfonyl chloride (0.0099 g, 0.0072 mL, 0.056 mmol). The reaction mixture was heated in a microwave reactor at 100° C. for 35 minutes. The reaction was cooled to 25° C., diluted with ethyl acetate (40 mL), washed with 1 N hydrochloric acid, water, and brine. The organic layer was dried over magnesium sulfate, filtered and concentrated. The residue was chromatographed on silica gel eluting with 99:1 dichloromethane:methanol to give the title compound (18.6 mg, 69%). 1H NMR (300 MHz, DMSO-d6) δ 0.97 (d, J=6.25 Hz, 6 H) 1.56 (m, 2 H) 1.68 (m, 1 H) 4.46 (m, 2 H) 7.47 (m, 3 H) 7.61 (m, 4 H) 7.80 (d, J=6.99 Hz, 2 H) 8.54 (dd, J=7.91, 1.65 Hz, 1 H) 8.87 (dd, J=4.23, 1.29 Hz, 1 H) 10.85 (s, 1 H) 14.08 (br s, 1 H). MS (ESI−) m/z 566 (M−H)−.

Provenance & Evidence