Lithium hydroxide, monohydrate → Lithium 3-(2-(2-((4-(4-(tert-butoxycarbonyl)piperazin-1-yl)phenyl)amino)-5-(trifluoromethyl)pyrimidin-4-yl)ethyl)benzoate

Participants

Reaction Steps

LiOH.H2O (0.025 g, 0.60 mmol) was added to tert-butyl 4-(4-((4-(3-(methoxycarbonyl)phenethyl)-5-(trifluoromethyl)pyrimidin-2-yl)amino)phenyl)piperazine-1-carboxylate (I33) (0.117 g, 0.200 mmol) in THF (7 mL), water (1.5 mL) and methanol (1 mL). The resulting mixture was allowed to stir at room temperature for 17 hours, the volatiles were removed in vacuo and the residue was diluted with EtOAc (100 mL) and sat. aq. NaHCO3 (80 mL). The layers were separated and the aqueous layer was extracted with EtOAc (2×80 mL), the organic layers were combined, washed with brine (70 mL), dried (MgSO4), filtered and concentrated under reduced pressure to give the title compound (I34) (0.105 g, 91% yield) as a pale yellow solid; 1H NMR (400 MHz, d6-DMSO) δ 10.00 (s, 1H), 8.60 (s, 1H), 7.85-7.74 (m, 2H), 7.56-7.48 (m, 2H), 7.47-7.35 (m, 2H), 6.93 (d, J=9.1 Hz, 2H), 3.50-3.41 (m, 4H), 3.17-2.98 (m, 8H), 1.42 (s, 9H). LCMS Method C: rt 6.30 min; m/z 572.3 [M+H]+.

Provenance & Evidence