Water → HCID 9802564, compound

Participants

Reaction Steps

To a stirred solution of 17β-hydroxy-4-methyl-5α-4-azaandrostan-3-one (1.07 g, 3.5 mmole) and p-nitrofluorobenzene (2.0 ml, 14 mmole) in DMF (15 ml) under N2 was added 95% NaH (180 mg, 7 mmole) in two portions during 10 mins. The mixture was stirred for 3 hours at room temperature and poured onto ice (50 g) and water (50 ml). The mixture was extracted with CH2Cl2 (30 ml×2). The organic layer was washed with brine and dried (Na2SO4). Removal of solvent gave the crude product which was purified via a flash silica gel column eluting with 1:1 ethyl acetate-CH2Cl2 to give the desired title product. Mp. 183°-184° C. (recrystallized from CH2Cl2 -hexane).

Provenance & Evidence