反应详情

温度

82.5 °C

A reaction mixture prepared from 10 mmol of 2,2-dimethyl-4-chromanone, 12 mmol of hydroxylamine hydrochloride in 5 ml of methanol and 5 ml of pyridine is heated with stirring over the course of 2 hours to 80-85° C., the solvent is distilled off on a rotary evaporator and the oily residue is crystallized under water.

1. temperatureis heated
2. distillationthe solvent is distilled off on a rotary evaporator
3. customthe oily residue is crystallized under water