1,4-Dioxane → tert-butyl 4-(2-(6-(N-(2,4-dimethoxybenzyl)-N-(thiazol-2-yl)sulfamoyl)isoquinolin-1-yl)-5-(trifluoromethyl)phenyl)-5,6-dihydropyridine-1(2H)-carboxylate

Participants

Reaction Steps

A microwave vial was charged with 1-(2-bromo-4-(trifluoromethyl)phenyl)-N-(2,4-dimethoxybenzyl)-N-(thiazol-2-yl)isoquinoline-6-sulfonamide (0.063 g, 0.095 mmol), tert-butyl 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-5,6-dihydropyridine-1(2H)-carboxylate (0.044 g, 0.142 mmol), Pd(AmPhos)2Cl2 (6.71 mg, 9.48 μmol), and potassium phosphate (0.070 g, 0.332 mmol). Dioxane (0.474 ml) and water (0.158 ml) were added, the vial was flushed with argon and sealed, and microwaved at 100° C. for 30 minutes. The reaction was diluted with ethyl acetate and washed with water. The aqueous layer was extracted with ethyl acetate, and the combined organic layers were dried with sodium sulfate, filtered, and concentrated. The material was purified by silica gel chromatography (12 g column, gradient elution 0 to 50% EtOAc:Heptane) to afford tert-butyl 4-(2-(6-(N-(2,4-dimethoxybenzyl)-N-(thiazol-2-yl)sulfamoyl)isoquinolin-1-yl)-5-(trifluoromethyl)phenyl)-5,6-dihydropyridine-1(2H)-carboxylate as an off-white solid. m/z (ESI) 767.3 (M+H)+.

Provenance & Evidence