Allyl bromide → Methyl 3-allyloxy-4-nitro-benzoate

Beteiligte Stoffe

Reaktionsschritte

Methyl 3-hydroxy-4-nitro-benzoate 1b (7 g, 35.50 mmol) was dissolved in 100 mL of anhydrous acetonitrile followed by the addition of potassium carbonate (14.70 g, 106.50 mmol) and 3-bromopropene (6.2 mL, 71 mmol) successively, the reaction mixture was heated to reflux for 3 hours with stirring. The resulting mixture was filtered and the filtrate was concentrated under reduced pressure. The crude residue was added with 150 mL of ethyl acetate, washed with water (100 mL×3) and saturated sodium chloride solution (100 mL×3) successively, then dried over anhydrous magnesium sulfate, filtered and the filtrate was concentrated under reduced pressure. The resulting residue was purified by silica gel column chromatography to obtain the title compound methyl 3-allyloxy-4-nitro-benzoate 1c (7.45 g, yield: 89.0%) as a yellow solid.

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