反应详情

3α-Aminocholest-5-ene (1.61 mmol, 0.59 g) was dissolved in 2 mL of anhydrous diethyl ether. Hydrogen chloride (2.0 M in diethyl ether) (3.22 mmol, 1.61 mL) was then added. After 3 hours, a white precipitate formed. The reaction was then filtered and the solid was washed with diethyl ether to afford 3α-aminocholest-5-ene hydrochloride (0.31 g, 46%) as a white solid. mp 293-295° C.; IR (thin film) 2947 cm−1; 1H NMR (300 MHz, CDCl3) d 8.25 (s, 3H), 5.52 (d, 1H, J=4.3 Hz), 3.58 (s, 1H), 2.61 (d, 1H, J=14.6 Hz), 2.36 (d, 1H, J=15.0 Hz), 2.02-1.07 (m, 26H), 1.01 (s, 3H), 0.91 (d, 3H, J=6.3 Hz), 0.86 (d, 6H, J=6.6 Hz), 0.67 (s, 3H).

1. customa white precipitate formed
2. filtrationThe reaction was then filtered
3. washthe solid was washed with diethyl ether