2-Chloro-4-iodo-5-(trifluoromethyl)pyridine → 2-(2-Chloro-5-(trifluoromethyl)pyridin-4-ylamino)-6-methoxy-N-methylbenzamide

Beteiligte Stoffe

Reaktionsbedingungen

Reaktionsschritte

2-chloro-4-iodo-5-(trifluoromethyl)pyridine (420 mg, 1.37 mmol), 2-amino-6-methoxy-N-methylbenzamide (246 mg, 1.37 mmol), diacetoxypalladium (24.54 mg, 0.11 mmol), (9,9-dimethyl-9H-xanthene-4,5-diyl)bis(diphenylphosphine) (126 mg, 0.22 mmol) and cesium carbonate (534 mg, 1.64 mmol) were mixed together in dioxane (8 mL). Reaction was degassed with argon and was stirred at 90 °C overnight (15 hours) under argon. Reaction was filtered, washed with CH2Cl2 and the filtrate was concentrated to dryness. The crude product was purified by flash chromatography on silica gel eluting with 10 to 30% ethyl acetate in petroleum ether. The solvent was evaporated to dryness to afford 2-(2-chloro-5-(trifluoromethyl)pyridin-4-ylamino)-6-methoxy-N-methylbenzamide (325 mg, 66.1 %) as a white solid.

Herkunft & Nachweise