Hydrochloric Acid → Gon-4-en-3-one, 13-ethyl-17-hydroxy-, (17beta)-(+-)-

Beteiligte Stoffe

Reaktionsschritte

Stir 13β-ethyl-17β-hydroxy-gon-5(10)-en-3-one (300 mg.) for 2 hours under nitrogen at room temperature with methanol (10 cc.)-11N hydrochloric acid (0.5 cc.)-water (0.3 cc.). Add sodium bicarbonate (2 g.) and ether (50cc.), filter the mixture, evaporate the ether and recrystallize the residue from ethyl acetate-ether to give 13β-ethyl-17β-hydroxy-gon-4-en-3-one (0.2 g.), m.p. 147°-149°; ultraviolet absorption peak at 242 mμ (ε 17,600); infrared absorption peaks at 2.78, 2.90, 6.02, 6.17.

Herkunft & Nachweise