Boron tribromide → HCID 67450019, compound

Participants

Reaction Steps

Following General Procedure F, tert-butyl 2-(4-(6-chloro-8-methoxy-4-oxo-4,5-dihydrothieno[2,3-c]quinolin-9-yl)phenyl)propylcarbamate (40 mg, 0.08 mmol) was treated with BBr3 (1.0 M in CH2Cl2, 3 mL, 3 mmol) to afford the desired product as an yellow solid (13 mg, 40%): 1H NMR (500 MHz, CD3OD) δ 7.63 (d, J=5.4 Hz, 1H), 7.56 (dd, J=7.9, 1.8 Hz, 1H), 7.48 (dd, J=7.8, 1.8 Hz, 1H), 7.40-7.28 (m, 3H), 6.12 (d, J=5.4 Hz, 1H), 3.29-3.19 (m, 3H), 1.49 (d, J=6.3 Hz, 3H); ESI MS m/z 385 [C20H17ClN2O2S+H]+; HPLC 99% (AUC), tR=8.12 min.

Provenance & Evidence