Potassium Carbonate → 2-Ethyl-6-(2-methoxy-4-trifluoromethoxy-phenyl)-5-methyl-3-nitro-pyridine

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Reaction Steps

Tetrakistriphenylphosphinepalladium(0) (0.03 g, 0.03 mmol) is added to 2-chloro-6-(2-methoxy-4-trifluoromethoxy-phenyl)-5-methyl-3-nitro-pyridine (0.10 g, 0.27 mmol) in toluene (5 mL). Ethyl boronic acid (0.1 g, 1.1 mmol) and potassium carbonate (0.07 g, 0.55 mmol)) are added to this solution, and the reaction is heated to reflux for 17 hours. The product is extracted with ethyl acetate (20 mL). Combined extracts are washed with brine (20 mL), dried over sodium sulfate, and concentrated in vacuo. Purification by flash column chromatography (5% EtOAC-hexane) yields 2-ethyl-6-(2-methoxy-4-trifluoromethoxy-phenyl)-5-methyl-3-nitro-pyridine as a yellow solid TLC Rf 0.55 (elution with 10% ethyl acetate-hexane)

Provenance & Evidence