反应详情

温度

28 °C

To a stirred solution of 2,5-difluoro-4-nitrotoluene (0.550 g. 3.18 mmol) in DMF (5.0 mL) was added dropwise a solution of sodium glycinate (0.308 g, 3.18 mmol, Aldrich, used as received) in water (1.0 mL). The resulting suspension was stirred at 28° C. overnight. The solid was filtered and dried under vacuum to give 0.168 g (23%) of crude product. It was purified as follows. 0.150 g material was boiled in ethyl acetate (5.0 mL) and filtered while hot to give 0.134 g (18%) of the pure (1H NMR) title compound as a yellow powder. 1H NMR (DMSO-d6): 2.213 (s, 3H), 3.428 (d, 2H, J=3.9 Hz), 6.765 (d, 1H, J=6.9 Hz), 7.700 (d, 1H, J=10.5 Hz), 8.728 (s, 1H).

1. filtrationThe solid was filtered
2. customdried under vacuum
3. customto give 0.168 g (23%) of crude product
4. customIt was purified
5. filtrationfiltered while hot