Sulfuric Acid → HCID 69916490, compound

Participants

Reaction Steps

19.9 g of 11α-acetoxy-7α-(9-tert-butyldimethylsilyloxynonyl)-estr-4-ene-3,17-dione in 90 ml of methanol is mixed at room temperature with 20 ml of 8% sulfuric acid. After 2.5 hours, it is diluted with ethyl acetate, washed neutral with saturated sodium bicarbonate solution and water and dried. The chromatography of the crude product on silica gel with a methylene chloride-acetone gradient yields 15.8 g of 11α-acetoxy-7α-(9-hydroxynonyl)-estr-4-ene-3,17-dione as a foam.

Provenance & Evidence