Triethylamine → N-[(2R)-2,3-dihydroxypropyl]-5-(3-methyl-5-{[4-(trifluoromethyl)pyrimidin-2-yl]amino}phenyl)-1,3-thiazole-2-carboxamide

Participants

Reaction Steps

To a solution of (2R)-3-aminopropane-1,2-diol (132 mg, 1.446 mmol), 5-(3-methyl-5-{[4-(trifluoromethyl)pyrimidin-2-yl]amino}phenyl)-1,3-thiazole-2-carboxylic acid (500 mg, 1.315 mmol), and triethylamine (0.403 mL, 2.89 mmol) in N,N-dimethylformamide (8 mL) was added benzotriazol-1-yl-oxytripyrrolidinophosphonium hexafluorophosphate (821 mg, 1.578 mmol). After 45 minutes, water (32 mL) was added to the reaction mixture and the resulting yellow solid was collected by filtration; the solid was then purified by trituration using a mixture of methanol (2 mL), ethyl acetate (3 mL), and dichloromethane (3 mL) followed by filtration and drying in vacuo. The mother liqour from the trituration was concentrated and additional product was purified via column chromatography on silica (Biotage 50 g SNAP column, 97.5:2.5 to 85:15 dichloromethane:methanol). The combined material afforded in N-[(2R)-2,3-dihydroxypropyl]-5-(3-methyl-5-{[4-(trifluoromethyl)pyrimidin-2-yl]amino}phenyl)-1,3-thiazole-2-carboxamide (487 mg 82% yield) as a yellow solid. MS ESI: [M+H]+ m/z 454.0. 1H NMR (500 MHz, d6-DMSO): δ 10.31 (s, 1H); 8.85 (d, J=4.9 Hz, 1H); 8.53 (t, J=5.9 Hz, 1H); 8.29 (s, 1H); 8.11 (s, 1H); 7.51 (s, 1H); 7.31 (s, 1H); 7.30 (d, J=4.9 Hz, 1H); 4.90 (d, J=5.1 Hz, 1H); 4.64 (t, J=5.7 Hz, 1H); 3.63 (m, 1H); 3.42 (m, 1H); 3.35 (m, 2H); 3.23 (m, 1H); 2.34 (s, 3H). rhSYK activity=+++

Provenance & Evidence