Trifluoroacetic acid → N-((trans-2-aminocyclohexyl)methyl)-2-(5-chloro-1-tosyl-1H-pyrrolo[2,3-b]pyridin-3-yl)-5-fluoropyrimidin-4-amine

Participants

Reaction Steps

A solution of the tert-butyl trans-2-((2-(5-chloro-1-tosyl-1H-pyrrolo[2,3-b]pyridin-3-yl)-5-fluoropyrimidin-4-ylamino)methyl)cyclohexylcarbamate, 14e, (0.52 g) in CH2Cl2 (5 mL) was treated with TFA (2.5 mL) for 30 min. the solution was concentrated in vacuo and the resulting crude material was taken up in CH3CN and concentrated in vacuo several times to remove excess TFA and to provide the desired amine, 14f, as racemic mixture of trans isomers, as the TFA salt, which was sufficiently pure for use in the next reaction.

Provenance & Evidence