Trifluoroacetic acid → (1R,3S)-N1-[2-[5-chloro-1-(p-tolylsulfonyl)pyrrolo[2,3-b]pyridin-3-yl]-5-fluoro-pyrimidin-4-yl]cyclohexane-1,3-diamine

Participants

Reaction Steps

tert-Butyl N-[(1S,3R)-3-[[2-[5-chloro-1-(p-tolylsulfonyl)pyrrolo[2,3-b]pyridin-3-yl]-5-fluoro-pyrimidin-4-yl]amino]cyclohexyl]carbamate, 20b, (0.33 g, 0.53 mmol) was dissolved in CH2Cl2 (10 mL) and treated with trifluoroacetic acid (2 mL). After stirring for 2 hours, the solvent was evaporated under reduced pressure and the resulting residue was passed through a polymer supported carbonate column to provide the free base of (1R,3S)—N1-[2-[5-chloro-1-(p-tolylsulfonyl)pyrrolo[2,3-b]pyridin-3-yl]-5-fluoro-pyrimidin-4-yl]cyclohexane-1,3-diamine, 20c, (0.25 g, 0.43 mmol, 81%).

Provenance & Evidence