反应详情

7-Oxo-5-androstene-3β,17β-diol diacetate (1 g, 2.57 mmol) and hydroxylamine hydrochloride (0.5 g) were taken in dry pyridine (8 Ml) and heated in a steam bath for 2 h. The reaction mixture was poured into water and precipitate obtained was filtered, washed with water and dried. The crude product on crystallization from methanol afforded pure oxime 7-oximino-5-androstene-3β,17β-diol diacetate (0.85 g, 86.54%), mp 236-238° C. (lit 226° C.) [Singh H., et al Indian J. Chem. 1969, 7, 1084-1087].

1. temperatureheated in a steam bath for 2 h
2. customobtained
3. filtrationwas filtered
4. washwashed with water
5. customdried
6. customThe crude product on crystallization from methanol afforded pure oxime 7-oximino-5-androstene-3β,17β-diol diacetate (0.85 g, 86.54%), mp 236-238° C. (lit 226° C.) [Singh H., et al Indian J. Chem. 1969, 7, 1084-1087]