Diisopropylethylamine → 5-chloro-N4-((S)-1-(8-chloro-2-(pyridin-2-yl)quinolin-3-yl)ethyl)pyrimidine-2,4-diamine

Participants

Reaction Steps

A mixture of (1S)-1-(8-chloro-2-(pyridin-2-yl)quinolin-3-yl)ethanamine (0.090 g, 0.32 mmol) in n-butanol (3 mL) was treated with DIEA (0.11 mL, 0.64 mmol, 2.0 eq), followed with 4,5-dichloropyrimidin-2-amine (0.062 g, 0.38 mmol, 1.2 eq) at 100° C. for 8 h. The reaction mixture was concentrated and purified by column chromatography on a Redi-Sep™ column using 0 to 100% gradient of CH2Cl2:MeOH:NH4OH (89:9:1) in CH2Cl2 as eluent to provide 5-chloro-N4-((S)-1-(8-chloro-2-(pyridin-2-yl)quinolin-3-yl)ethyl)pyrimidine-2,4-diamine [PI3Kδ IC50=105 nM] as a white solid. 1H-NMR (DMSO-d6) δ ppm 8.65-8.76 (m, 1H), 8.53 (s, 1H), 8.11-8.20 (m, 1H), 8.07 (d, J=1.96 Hz, 1H), 7.91-8.00 (m, 2H), 7.86 (s, 1H), 7.62 (t, J=8.02 Hz, 1H), 7.51-7.58 (m, 1H), 6.03-6.25 (m, 1H), 1.38-1.63 (d, J=7.04, 3H), Mass Spectrum (ESI) m/e=412 (M+1).

Provenance & Evidence