Boron tribromide → HCID 67450020, compound

Participants

Reaction Steps

Following General Procedure F, (R)-tert-butyl 2-(4-(6-chloro-8-methoxy-4-oxo-4,5-dihydrothieno[2,3-c]quinolin-9-yl)phenyl)propylcarbamate (100 mg, 0.20 mmol) was treated with BBr3 (1.0 M in CH2Cl2, 5 mL, 5 mmol) to afford the desired product as a white solid (23 mg, 30%): 1H NMR (500 MHz, CD3OD) δ 7.63 (d, J=5.4 Hz, 1H), 7.56 (dd, J=7.9, 1.9 Hz, 1H), 7.47 (dd, J=7.8, 1.9 Hz, 1H), 7.39-7.28 (m, 3H), 6.12 (d, J=5.4 Hz, 1H), 3.36-3.13 (m, 3H), 1.49 (d, J=6.5 Hz, 3H); ESI MS m/z 385 [C20H17ClN2O2S+H]+; HPLC 98.4% (AUC), tR=9.19 min.

Provenance & Evidence