Dichloromethane → HCID 86689537, compound

Participants

Reaction Steps

Following General Procedure F, tert-butyl 4-(6-bromo-8-methoxy-4-oxo-4,5-dihydrothieno[2,3-c]quinolin-9-yl)-2-fluorophenethyl(methyl)carbamate (90 mg, 0.16 mmol) in CH2Cl2 at 0° C. was added BBr3 (1.0 M in CH2Cl2, 6 mL, 6 mmol) and the reaction was warmed to room temperature for 4 h. The reaction was quenched by pouring onto water or ice-water and the resulting mixture was concentrated and purified by preparatory HPLC (C18 silica, acetonitrile/water (with 0.05% TFA) gradient). The desired product was dissolved in aqueous HCl, concentrated and dried under high vacuum to afford the desired product as a white solid (15 mg, 21%): ESI MS m/z 447 [C20H16BrFN2O2S+H]+; HPLC >99% (AUC), tR=9.26 min.

Provenance & Evidence