Hydrochloric Acid → HCID 67205648, compound

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Reaction Steps

A solution of 1,1-dimethylethyl[2-(4-{(2S,4R)-1-acetyl-4-[(3-fluoro-2-pyridinyl)amino]-2-methyl-1,2,3,4-tetrahydro-6-quinolinyl}-1H-pyrazol-1-yl)ethyl]methylcarbamate (for a preparation see intermediate 72) (111.6 mg, 0.214 mmol) in dichloromethane (DCM) (4 mL) was treated with trifluoroacetic acid (TFA) (1 mL, 12.98 mmol) and the resulting mixture was stirred at room temperature for 45 min then concentrated in vacuo. The residue was loaded on a 5 g SCX cartridge then eluted with MeOH (20 mL) followed by 2M NH3 in MeOH (20 mL). The ammonia fractions were combined and concentrated in vacuo to give a residue which was dissolved in DCM (5 mL). The resulting solution was treated with HCl (1M in Et2O, 0.2 mL, 0.2 mmol) then concentrated in vacuo. Trituration of the residue with Et2O gave (2S,4R)-1-acetyl-N-(3-fluoro-2-pyridinyl)-2-methyl-6-{1-[2-(methylamino)ethyl]-1H-pyrazol-4-yl}-1,2,3,4-tetrahydro-4-quinolinamine hydrochloride (67.4 mg, 0.137 mmol, 64.1% yield) as a light orange solid.

Provenance & Evidence