Potassium Carbonate → 5-(5-bromo-2-methylpyridin-3-yl)-1-methyl-1H-indazole

Beteiligte Stoffe

Reaktionsbedingungen

Reaktionsschritte

To a solution of 3,5-dibromo-2-methylpyridine (1.0 g, 3.99 mmol) and 5-(bromomethyl)-1-methyl-1H-indazole (772 mg, 4.38 mmol) in 1,4-dioxane (12 mL) was added Pd(PPh3)4 (231 mg, 0.20 mmol) and potassium carbonate solution (2 M aqueous, 6 mL, 12 mmol). The reaction mixture was stirred at 105° C. in a sealed tube for 1.5 h. The mixture was diluted with water (15 mL) and EtOAc (20 mL). The layers were separated, and the organic layer was dried, filtered, and concentrated in vacuo. The crude material was purified by CombiFlash (EtOAc w/5% MeOH and Hexanes) to give 5-(5-bromo-2-methylpyridin-3-yl)-1-methyl-1H-indazole and 5-(5-bromo-6-methylpyridin-3-yl)-1-methyl-1H-indazole.

Herkunft & Nachweise