Dimethylformamide → Benzeneacetyl chloride, 4-(acetyloxy)-

関与物質

反応手順

250 mg of p-acetoxyphenylacetic acid was dissolved in 5 ml of methylene chloride. To the solution were added, with ice cooling, a catalytic amount of N,N-dimethylformamide and 0.12 ml of oxalyl chloride. The mixture was stirred at room temperature for 1 hour. The reaction mixture was concentrated under reduced pressure to obtain p-acetoxyphenylacetyl chloride. This compound was dissolved in 5 ml of methylene chloride. To the solution was added 260 mg of a sulfur trioxide-dioxane complex with ice cooling. The mixture was stirred at room temperature for 2 hours. The solvent was removed by distillation under reduced pressure to obtain DL-2-(p-acetoxyphenyl)-2-sulfoacetyl chloride. This compound was dissolved in 5 ml of anhydrous tetrahydrofuran.

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