Sodium Carbonate → 5-(3-Nitrophenyl)furfural

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To a mixture of 1.5 g of 1-bromo-3-nitrobenzene (7.42 mmol), 1 g of 5-formyl-2-furanboronic acid (7.42 mmol), and 35 mL of a solution of saturated sodium carbonate (Na2CO3) in 0.2 M tetrahydrofuran was added 0.2 g of tetrakis triphenylphosphine palladium [Pd(PPh3)4] (0.2 mmol) at room temperature with stirring. After completion of the addition, the resulting mixture was heated for an additional 12 hrs, cooled to room temperature, and concentrated in vacuo. The concentrate was extracted with methylene chloride, and the organic layer thus formed was added, washed with saturated brine, dried over magnesium sulfate, and concentrated in a vacuum. Purification by silica gel column chromatography afforded the title compound.

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