4-Nitrobenzaldehyde → 5-(4-Nitrophenyl)-1,3-oxazole

Beteiligte Stoffe

Reaktionsschritte

To an aqueous solution containing 0.84 g of sodium hydroxide were added 0.45 g of 4-nitrobenzaldehyde, 12.2 g of a methylene chloride solution containing 0.65 g of TosMIC which was obtained in the same way as that of Example 6 and 0.10 g of tetrabutyl ammonium bromide at room temperature. The mixture was allowed to react at room temperature until HPLC found no trace of the starting materials. Upon the completion of the reaction, the reaction solution was washed with water and dried over anhydrous magnesium sulfate. The solvents were distilled off. An HPLC analysis showed that the concentrated residue contained 0.82 g of the target compound (yield: 93%).

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