Potassium Iodide → (R)-6-((3-((3-(5-((2-((tert-butyldimethylsilyl)oxy)-2-(8-hydroxy-2-oxo-1,2-dihydroquinolin-5-yl)ethyl)amino)pent-1-yn-1-yl)phenyl)carbamoyl)phenyl)sulfonyl)-4-((3-methoxyphenyl)amino)-8-methylquinoline-3-carboxamide

Participants

Reaction Conditions

Reaction Steps

A mixture of Intermediate 98 (0.35 g, 0.48 mmol) and Intermediate 2 (0.24 g, 0.72 mmol) in DMF (4.5 mL) was treated with N,N-diisopropylethylamine (0.25 mL) and catalytic potassium iodide (50 mg). The mixture was heated for 19 hours in a 55° C. oil bath. The mixture was concentrated under reduced pressure and purified via automated flash silica gel chromatography, using a 25 g Silicycle SiliSep flash column (dichloromethane/methanol/ammonium hydroxide). Concentration of the desired fractions under reduced pressure provided the title compound as a yellow solid (0.28 g, 61%). ES/MS calcd. for C53H57N6O8SSi+ 965.4. Found m/z=965.5 (M+H)+.

Provenance & Evidence