Trifluoroacetic acid → HCID 178511731, compound

Participants

Reaction Conditions

Reaction Steps

Tert-butyl(trans-3-((3-(cyclopropanecarboxamido)pyridin-2-yl)amino)cyclobutyl)carbamate (1.27 g, 3.67 mmol, was dissolved in acetic acid (300 mL) and heated at 105° C. After 4½ hours, trifluoroacetic acid (1 mL) was added and the reaction stirred at 105° C. After heating for an additional 5 hours, the reaction was evaporated to dryness under reduced pressure. The crude product was free based by partitioning between dichloromethane and saturated aqueous sodium bicarbonate. The organic was dried with magnesium sulfate and evaporated to dryness under reduced pressure. The crude was purified using silica chromatography (0-10% methanol in dichloromethane gradient) to give trans-3-(2-cyclopropyl-3H-imidazo[4,5-b]pyridin-3-yl)cyclobutanamine (0.579 g, 2.54 mmol, 53.9% yield).

Provenance & Evidence