Trifluoroacetic acid → Methyl 6-[(5-cyano-2-pyrazinyl)amino]-4-[(4-piperidinylmethyl)amino]nicotinate

Participants

Reaction Steps

TFA (0.1 mL) was added to a solution of methyl 4-((1-(tert-butoxycarbonyl)piperidin-4-yl)methylamino)-6-(5-cyanopyrazin-2-ylamino)nicotinate (20 mg, 0.04 mmol) in dichloromethane (1 mL) at room temperature. After 20 minutes, the solution was evaporated to dryness and purified by ion exchange chromatography on SCX-II acidic resin (500 mg) eluting with methanol, then 2M ammonia-methanol. The basic fractions were combined and solvent was evaporated to give methyl 6-(5-cyanopyrazin-2-ylamino)-4-(piperidin-4-ylmethylamino)-nicotinate compound as a yellow solid (11 mg, 70%).

Provenance & Evidence