Water → HCID 13251127, compound

Participants

Reaction Steps

To a solution of 3β-hydroxyandrost-5-en-17-one (10.00 g) in pyridine (66 mL), toluene-4-sulfonyl chloride (13.20 g) and DMAP (10 mg) were added at 0° C. under stirring. The reaction was allowed to warm to room temperature and stirred for 15 hr. After dilution with EtOAc (300 mL) the mixture was poured into iced water. The organic layer was separated, washed with 1N H2SO4, water and brine, dried and evaporated to dryness to give 3β-(p-toluensulfonyloxy)androst-5-en-17-one (14.70 g, 96%), as a white solid. 1H-NMR (300 MHz, acetone-d6, ppm from TMS): δ 7.81 (2H, m), 7.48 (2H, m), 5.35 (1H, m), 4.26 (1H, m), 2.46 (3H, s), 2.54-0.93 (19H, m), 1.05 (3H, s), 0.85 (3H, s).

Provenance & Evidence