反应详情

To a solution of methyl 4-nitrobutyrate (1.0 g, 6.80 mmol) in methanol (10 ml) was added 40% dimethylamine water solution (12.5 ml, 102 mmol). The solution was stirred at room temperature for 48 h, concentrated by vacuum, and diluted with ethyl acetate (20 ml). The organic layer was dried and evaporated. The residue was purified by flash chromatography over silica gel (Hexane-EtOAc, 1:1) to give the title product (0.99 g, 91%). 1H NMR (CDCl3): 4.53 (t, J=6.6 Hz, 2H), 3.02-2.94 (m, 6H), 2.48-2.43 (m, 2H), 2.36-2.31 (m, 2H).

1. concentrationconcentrated by vacuum
2. additiondiluted with ethyl acetate (20 ml)
3. customThe organic layer was dried
4. customevaporated
5. customThe residue was purified by flash chromatography over silica gel (Hexane-EtOAc, 1:1)