Potassium Carbonate → Perfluorophenyl 1-(2-chloro-3'-fluoro-5-methoxy-[1,1'-biphenyl]-4-yl)isoquinoline-6-sulfonate

Participants

Reaction Conditions

Reaction Steps

A round-bottom flask was charged with perfluorophenyl 1-chloroisoquinoline-6-sulfonate (from Step 1 of Example 73, 500 mg, 1.220 mmol), (2-chloro-3′-fluoro-5-methoxy-[1,1′-biphenyl]-4-yl)boronic acid (Intermediate SSSS; 479 mg, 1.709 mmol) potassium carbonate (506 mg, 3.66 mmol), and Pd(Ph3P)4 (141 mg, 0.122 mmol). The vial was flushed with Ar (g), then 1,4-dioxane (4576 μl) and water (1525 μl) were added. The flask was fitted with a reflux condenser and heated in a 50° C. heating bath for 40 min. The mixture was partitioned between water and EtOAc. The layers were separated, and the organic layer was washed with brine, dried over sodium sulfate, filtered, and concentrated. The residue was purified by chromatography on silica gel (40-g Redi-Sep Gold column, 25-g silica gel loading column, 0-50% EtOAc/Heptane) to give perfluorophenyl 1-(2-chloro-3′-fluoro-5-methoxy-[1,1′-biphenyl]-4-yl)isoquinoline-6-sulfonate (593.7 mg, 0.973 mmol, 80% yield) as a white foam. m/z (ESI) 609.9 (M+H)+.

Provenance & Evidence