Hydrochloric Acid → (S)-2-(4-bromo-3-fluorophenyl)-2-((S)-5,5-dimethylpyrrolidin-2-yl)-1-(4-((5R,7R)-7-hydroxy-5-methyl-6,7-dihydro-5H-cyclopenta[d]pyrimidin-4-yl)piperazin-1-yl)ethanone dihydrochloride

Participants

Reaction Steps

4.0M HCl in dioxanes (1.5 mL) was added to a solution of (S)-tert-butyl 5-((S)-1-(4-bromo-3-fluorophenyl)-2-(4-((5R,7R)-7-hydroxy-5-methyl-6,7-dihydro-5H-cyclopenta[d]pyrimidin-4-yl)piperazin-1-yl)-2-oxoethyl)-2,2-dimethylpyrrolidine-1-carboxylate (0.012 g, 0.0186 mmol) in DCM (5 mL). This solution was stirred at room temperature overnight, and then the solvent was removed to yield (S)-2-(4-bromo-3-fluorophenyl)-2-((S)-5,5-dimethylpyrrolidin-2-yl)-1-(4-((5R,7R)-7-hydroxy-5-methyl-6,7-dihydro-5H-cyclopenta[d]pyrimidin-4-yl)piperazin-1-yl)ethanone dihydrochloride (0.00367 g, 0.00593 mmol, 31.9% yield). HPLC, 254 nm=1.99 minutes, 96.93% purity, LCMS (APCI+) 548.3 m/z [M+H]+; Retention time=2.56 minutes, 1H NMR (400 MHz, CD3OD) 8.59 (s, 1H), 7.71 (t, J=7.418 Hz, 1H), 7.39 (dd, J1=1.562 Hz, J2=9.761 Hz, 1H), 7.22 (d, J=7.418 Hz, 1H), 5.30 (t, J=7.809 Hz, 1H), 4.53 (d, J=9.371 Hz, 1H), 3.81-3.65 (m, 6H), 2.30 (dd, J1=7.809 Hz, J2=12.884 Hz, 1H), 2.21-2.15 (m, 1H), 2.02-1.85 (m, 4H), 1.55 (s, 3H), 1.45 (s, 3H), 1.19 (d, J=7.028 Hz, 3H).

Provenance & Evidence