反应详情

In accordance with the procedure described in Example 7, a solution of 3.8 g of 4-amino-N-methyl-2-oxo-3-pentenesulfonamide and 3.6 ml of benzyl bromide in 50 ml of dimethylformamide was treated with 6 g of potassium carbonate and the mixture was stirred intensively at room temperature for 9 hours. The product was firstly chromatographed on 300 g of silica gel with ethyl acetate as the elution agent and then recrystallized from isopropanol. There were obtained 3.4 g of 4-amino-N-benzyl-N-methyl-2-oxo-3-pentenesulfonamide in the form of colorless crystals, m.p. 115°-118°.

1. customThe product was firstly chromatographed on 300 g of silica gel with ethyl acetate as the elution agent
2. customrecrystallized from isopropanol