Boron tribromide → HCID 68229038, compound

Participants

Reaction Steps

Following General Procedure F, the crude material from Example 74, 4-(8-methoxy-4-oxo-4,5-dihydrothieno[2,3-c]quinolin-9-yl)-N,N-dimethylbenzenesulfonamide (33 mg, 0.080 mmol), was reacted with tribromoborane (0.2 mL) to afford the desired product (9 mg, 7% over 2 steps) as a brown solid: 1H NMR (500 MHz, DMSO-d6) δ 11.85 (s, 1H), 9.44 (s, 1H), 7.88 (dd, J=6.8, 1.6 Hz, 2H), 7.79 (d, J=5.4 Hz, 1H), 7.57 (dd, J=6.6, 1.7 Hz, 2H), 7.42 (d, J=8.9 Hz, 1H), 7.20 (d, J=8.9 Hz, 1H), 5.69 (d, J=5.4 Hz, 1H), 2.71 (s, 6H); ESI MS m/z 401 [C19H6N2O4S2+H]+; HPLC 94.5% (AUC), tR=14.84 min.

Provenance & Evidence