Potassium Carbonate → 1-(4-hydroxy-2-methoxyphenyl)-N-(4-methoxybenzyl)-N-(pyrimidin-4-yl)isoquinoline-6-sulfonamide

Participants

Reaction Conditions

Reaction Steps

A vial was charged with 1-chloro-N-(4-methoxybenzyl)-N-(pyrimidin-4-yl)isoquinoline-6-sulfonamide (INTERMEDIATE ZZZZ, 122 mg, 0.277 mmol), 3-methoxy-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenol (138 mg, 0.553 mmol), potassium carbonate (191 mg, 1.384 mmol), and Pd(PPh3)4 (32.0 mg, 0.028 mmol). The vial was flushed with Ar (g), then 1,4-dioxane (1038 μl) and water (346 μl) were added. The vial was sealed and heated to 80° C. for 2 h in a Biotage Initiator microwave reactor. The mixture was extracted with EtOAc (3×), and the combined organic extracts were concentrated. The residue was purified by chromatography on silica gel (25-g Interchim column, 35-85% EtOAc/Heptane, then with 85-100% EtOAc/Heptane) to give 1-(4-hydroxy-2-methoxyphenyl)-N-(4-methoxybenzyl)-N-(pyrimidin-4-yl)isoquinoline-6-sulfonamide (93.6 mg, 0.177 mmol, 64.0% yield) as an off-white solid. m/z (ESI) 529.2 (M+H)+.

Provenance & Evidence