Trifluoroacetic acid → HCID 67599809, compound

Participants

Reaction Steps

To a solution of tert-butyl 1-(6-fluoro-4-(3-methylpyridin-2-yl)-3-(pyridin-2-yl)-quinolin-2-yl)ethylcarbamate (0.23 g, 0.50 mmol) in DCM (5 mL) was added trifluoroacetic acid (0.97 mL, 12.5 mmol) and the resulting solution was stirred at room temperature for one hour. The solution was concentrated under reduced pressure then diluted with 1-butanol (2.5 mL) followed by the addition of 4-amino-6-chloropyrimidine-5-carbonitrile (0.082 g, 0.53 mmol) and diisopropylethylamine (0.26 mL, 1.51 mmol) and 4-amino-6-chloropyrimidine-5-carbonitrile (0.082 g, 0.53 mmol). The solution was stirred at 120° C. for 3 h then purification was attempted by silica gel column chromatography eluting with 0-100% (1:10:90 NH4OH:MeOH:DCM) in DCM). The resulting crude solid was repurified by silica gel column chromatography eluting with a gradient of 0-7% MeOH in DCM to afford a mixture of (R) and (S)-4-amino-6-(1-(6-fluoro-4-(3-methylpyridin-2-yl)-3-(pyridin-2-yl)quinolin-2-yl)ethylamino)pyrimidine-5-carbonitrile as a yellow glass: LC-MS (ESI) m/z 477.2 [M+H]+.

Provenance & Evidence