反应详情

2-Aminoethanol (4 g, 65.48 mmol, 1 equiv) was dissolved in 200 mL of methanol, and triethylamine (9.94 g, 98.23 mmol, 1.5 equiv) was added, followed by adding ethyl trifluoroacetate (11.16 g, 78.59 mmol, 1.2 equiv). After the reaction mixture was stirred overnight at room temperature, the solvent was evaporated, and the residue was dissolved in DI water and extracted with ethyl acetate. The crude product was purified by silica gel column chromatography using ethyl acetate as eluent. The obtained product was a white solid (9.8 g, 62.42 mmol, 95% yield). 1H-NMR (600 MHz, CDCl3): δ 2.07 (s, 1H, CF3CONHCH2CH2OH); δ 3.5 (t, 2H, CF3CONHCH2CH20H); δ 3.8 (t, 2H, CF3CONHCH2CH2OH); δ 6.9 (s, 1H, CF3CONHCH2CH2OH).

1. customthe solvent was evaporated
2. dissolutionthe residue was dissolved in DI water
3. extractionextracted with ethyl acetate
4. customThe crude product was purified by silica gel column chromatography