Hydrochloric Acid → (3-chloro-4-{(E)-2-[5-(4-fluorophenyl)-1-methyl-1H-pyrazol-3-yl]vinyl}bicyclo[4.2.1]non-3-en-9-yl)amine

Participants

Reaction Conditions

Reaction Steps

Hydrochloric acid (in dioxane, 4M, 50 ml) was added into a solution of the product of Step 5 (5.71 g, 12 mmol) in methanol (100 ml) at 0° C. The solution was stirred at 0° C. for 1 hr and then at ambient temperature for a further 1 hr. The reaction mixture was concentrated in vacuo, diluted with saturated sodium hydrogen carbonate and extracted with ethyl acetate (3×100 ml). The organic extract were washed with brine, dried over MgSO4 and concentrated in vacuo, then eluted through an SCX cartridge (50 g) with methanol (100 ml) and then with ammonia in methanol (2M, 50 ml). The fraction containing the product was concentrated in vacuo, to afford (3-chloro-4-{(E)-2-[5-(4-fluorophenyl)-1-methyl-1H-pyrazol-3-yl]vinyl}bicyclo[4.2.1]non-3-en-9-yl)amine (3.76 g, 84%). δH (400 MHz, CDCl3) 1.33-1.61 (4H, m), 1.74-1.92 (2H, m), 2.15-2.23 (1H, br), 2.30-2.39 (1H, br), 2.54-2.69 (3H, m), 3.12 (1H, d, J 18.0), 3.34 (1H, t, J 6.5), 3.82 (3H, s), 6.47 (1H, s), 6.65 (1H, d, J 16.5), 7.15 (2H, t, J 8.5), 7.37-7.41 (2H, m), 7.47 (1H, d, J 16.5)

Provenance & Evidence