Hydrochloric Acid → HCID 178459711, compound

Participants

Reaction Steps

4-[1-(2-Fluoro-4-methanesulfonyl-phenyl)-1H-pyrazolo[3,4-d]pyrimidin-4-ylsulfanyl]-piperidine-1-carboxylic acid tert-butyl ester (3.54 g, 6.97 mmol) was treated with 4M HCl in 1,4-dioxanes (40 mL). After 2 hours stirring at room temperature, 1-(2-fluoro-4-methanesulfonyl-phenyl)-4-(piperidin-4-ylsulfanyl)-1H-pyrazolo[3,4-d]pyrimidine hydrochloride was collected by filtration. To a mixture of 1-(2-fluoro-4-methanesulfonyl-phenyl)-4-(piperidin-4-ylsulfanyl)-1H-pyrazolo[3,4-d]pyrimidine hydrochloride (3.0 g, 6.76 mmol) in DMF (27 mL) was added triethyl amine (2.05 g, 20.28 mmol). After 30 minutes stirring, isopropyl chloroformate (7.44 mmol) as a 1.0M solution in toluene was added to the reaction and reaction was stirred for two hours. HCl salts had crashed out and were removed by filtration. Filtrate was extracted with ethyl acetate (100 mL) and washed with water (4×100 mL). Organic was dried over anhydrous MgSO4, filtered and concentrated in vacuo to yield Compound A214 as a white solid. 1H NMR(CDCl3, 400MHz) δ 1.27 (d, J=6.3 Hz, 6H), 1.77 (2H, m), 2.18 (2H, m), 3.13 (3H, s), 3.21 (2H, m), 4.04 (2H, m), 4.48-4.40 (1H, m), 4.99-4.90 (1H, m), 7.98-7.92 (3H, m), 8.30 (1H, s), 8.79 (1H, s). Exact mass calculated for C21H24FN5O4S2 493.1, found 494.3 (MH+).

Provenance & Evidence