反应详情

A solution of hydroxylamine hydrochloride (470 mg, 6.76 mmol) and sodium acetate trihydrate (590 mg, 4.34 mmol) dissolved in 20 ml of a mixture of EtOH/H2O (7/3) was added to a solution of 1-(2,6-dihydroxy-4-methylphenyl)ethanone (Intermediate 16, 940 mg) in 15 ml of a mixture of EtOH/H2O (7/3). After refluxing and stirring under N2 for 2 hours, additional hydroxylamine hydrochloride (159 mg, 2.29 mmol) and sodium acetate trihydrate (199 mg) dissolved in 5 ml of water were added. The reaction mixture was heated at reflux overnight. After cooling down to room temperature, the volatiles were removed. Water was added and the solid afforded was filtered, washed with water and dried giving 829 mg of the title compound.

1. temperatureAfter refluxing
2. additionwere added
3. temperatureThe reaction mixture was heated
4. temperatureat reflux overnight
5. customthe volatiles were removed
6. additionWater was added
7. customthe solid afforded
8. filtrationwas filtered
9. washwashed with water
10. customdried