Methanol → HCID 131734584, compound

Participants

Reaction Conditions

Reaction Steps

Sulfuric acid (0.10 ml, 1.83 mmol) was added to an oven-dried vial containing 2-hydroxy-3-[4-(3-methyl-5-{[4-(trifluoromethyl)pyrimidin-2-yl]amino}phenyl)-1H-pyrazol-1-yl]propanoic acid (1.78 g, 1.83 mmol) in MeOH (12.2 ml) and the solution was warmed to 70° C. and stirred for 1 h. The reaction mixture was cooled to room temperature, diluted with water, and extracted with EtOAc (3×). The combined organic layers were washed with brine, dried over sodium sulfate, filtered, concentrated under reduced pressure. The residue was purified by column chromatography on silica gel (0 to 80% EtOAc/hexanes) to afford racemic methyl (2R)-2-hydroxy-3-[4-(3-methyl-5-{[4-(trifluoromethyl)pyrimidin-2-yl]amino}phenyl)-1H-pyrazol-1-yl]propanoate. The racemic sample was purified by super critical fluid chiral chromatography (AD-H 2.1×25 cm, 5 μm, 45%/55% 2-propanol/CO2, 70 mL/min, 12 min. run time, 220 nM) to afford (R or S) 2-methyl-2-hydroxy-3-[4-(3-methyl-5-{[4-(trifluoromethyl)pyrimidin-2-yl]amino}phenyl)-1H-pyrazol-1-yl]propanoate (early eluting enantiomer). MS ESI calcd. for C19H19F3N5O3 [M+H]+ 422. found 422.

Provenance & Evidence