反应详情

温度

-20 °C

To 400 ml of water containing 80 g (2.0 mol) of sodium hydroxide dissolved, were added 150 g (2.0 mol) of glycine and 4 ml of nitrobenzene. To the mixture, there were simultaneously added 200 ml of an aqueous solution containing 96 g (2.4 mol) of sodium hydroxide and 230 g (2.2 mol) of methacrylic chloride under cooling (at -20° C.) with stirring over a period of about 2 hours. After adding 800 ml of acetonitrile and 160 ml of concentrated hydrochloric acid, the organic layer was separated. The solvent was distilled off under a reduced pressure and the crystals thus deposited were collected by filtration and recrystallized from ethyl acetate to obtain 184 g (64.3% yield) of α-methacryloylaminoacetic acid.

1. customthe organic layer was separated
2. distillationThe solvent was distilled off under a reduced pressure
3. filtrationthe crystals thus deposited were collected by filtration
4. customrecrystallized from ethyl acetate