Boron tribromide → HCID 86689524, compound

Participants

Reaction Steps

Following General Procedure F, (S)-tert-butyl 1-(4-(6-chloro-8-methoxy-4-oxo-4,5-dihydrothieno[2,3-c]quinolin-9-yl)phenyl)ethyl(methyl)carbamate (40 mg, 0.08 mmol) was reacted with tribromoborane (1.0 M in methylene chloride, 0.48 mL, 0.48 mmol) to afford the desired product (18 mg, 60%) as a white solid: 1H NMR (500 MHz, MeOD) δ 7.72-7.60 (m, 3H), 7.49-7.39 (m, 2H), 7.30 (s, 1H), 6.03 (d, J=5.4 Hz, 1H), 4.49 (q, J=6.9 Hz, 1H), 2.73 (d, J=4.3 Hz, 3H), 1.80 (d, J=6.9 Hz, 3H); ESI MS m/z 385 [C20H17ClN2O2S+H]+; HPLC >99% (AUC), tR=13.60 min.

Provenance & Evidence