反应详情

1-(2,6-dihydroxyphenyl)-2-methyl-1-propanone (Intermediate 37, 416 mg) was dissolved in pyridine (2.0 ml) and hydroxylamine hydrochloride (209 mg, 3.0 mmol) was added. The reaction mixture was then stirred at room temperature overnight. After night, additional hydroxylamine hydrochloride (64 mg, 0.92 mmol) was added and the mixture was heated at 100° C. for 3 hours. After removal of the volatiles, the crude was treated with water and extracted with ethyl acetate. The gathered organic layers were dried over sodium sulphate, filtered and evaporated to afford the title compound (370 mg).

1. waitAfter night
2. temperaturethe mixture was heated at 100° C. for 3 hours
3. customAfter removal of the volatiles
4. additionthe crude was treated with water
5. extractionextracted with ethyl acetate
6. dry with materialThe gathered organic layers were dried over sodium sulphate
7. filtrationfiltered
8. customevaporated