反应详情

温度

40 °C

To 3-Amino-4,4-dimethyl-pent-2-endinitrile (10.0 g, 74 mmol) in MeOH (150 mL) is added NH2OH.HCl (10.0 g, 144 mmol). The mixture is stirred at 40° C. for 7 h, concentrated, suspended in isopropyl acetate (100 mL) and washed with 4 N aq. NaOH (2×100 mL) and brine (50 mL). The extracted org. layer is concentrated to provide 7.40 g of 2-(5-Amino-isoxazol-3-yl)-2-methyl-propionitrile. Yield: 66%; ESI-MS: 152 [M+H]+; 1H-NMR (DMSO-d6): 1.6, 5.1, 6.8 ppm.

1. concentrationconcentrated
2. washwashed with 4 N aq. NaOH (2×100 mL) and brine (50 mL)
3. concentrationlayer is concentrated