反応 #164
ord-d638b772d95f46ee990c617a7a9864d8
反応方程式
溶媒
反応条件
実験手順
2-chloro-4-iodo-5-(trifluoromethyl)pyridine (7 g, 22.77 mmol), 2-amino-N- methylbenzamide (3.42 g, 22.77 mmol), diacetoxypalladium (0.409 g, 1.82 mmol), (9,9-dimethyl-9H-xanthene-4,5-diyl)bis(diphenylphosphine) (2.108 g, 3.64 mmol) and cesium carbonate (8.90 g, 27.32 mmol) were mixed together in dioxane (140 mL). Reaction was degassed with nitrogen and was stirred at 90 °C overnight under nitrogen. Reaction was filtered, washed with CH2Cl2 and filtrate was concentrated to dryness. The crude product was purified by flash chromatography on silica gel eluting with 10 to 50% ethyl acetate in petroleum ether. The solvent was evaporated to dryness to afford 2-(2-chloro-5-(trifluoromethyl)pyridin-4-ylamino)-N-methylbenzamide (5.06 g, 67.4 %) as a pale yellow solid.