Hydrochloric Acid → HCID 68161848, compound

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Reaction Steps

A solution of 1,1-dimethylethyl[2-(4-{(2S,4R)-1-acetyl-4-[(4-fluoro-2-pyridinyl)amino]-2-methyl-1,2,3,4-tetrahydro-6-quinolinyl}-1H-pyrazol-1-yl)ethyl]methylcarbamate (for a preparation see intermediate 78) (36 mg, 0.069 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 2.5 h then concentrated in vacuo. The residue was loaded onto a 2 g SCX cartridge and eluted with MeOH (45 mL) followed by 2M NH3 in MeOH (45 mL). The ammonia fractions were combined and concentrated in vacuo. The residue was dissolved in MeOH (1 mL) and the solution was treated with HCl (1M in Et2O, 0.06 mmol, 0.09 ml) then was concentrated in vacuo. Trituration of the residue with Et2O gave (2S,4R)-1-acetyl-N-(4-fluoro-2-pyridinyl)-2-methyl-6-{1-[2-(methylamino)ethyl]-1H-pyrazol-4-yl}-1,2,3,4-tetrahydro-4-quinolinamine hydrochloride (23 mg, 0.043 mmol, 62%) as a pale brown solid.

Provenance & Evidence