Lithium Hydroxide → HCID 57899109, compound

Participants

Reaction Conditions

Reaction Steps

To a glass vial add 6-trifluoromethyl-pyridin-3-ylamine (35 mg, 0.217 mmol), {4-[4-(2-chloro-pyridin-5-yl)-phenyl]-cyclohexyl}-acetic acid methyl ester (50 mg, 0.145 mmol), Pd(OAc)2-(5 mg, 5% mol), X-Phos (7 mg, 10% mol), and Cs2CO3 (118 mg, 0.363 mmol). Flush with N2. Add tBuOH (0.25 mL), toluene (0.75 mL), and seal the tube. The reaction mixture is heated to 150° C. for 30 min by microwave irradiation. The reaction is diluted with EtOAc and filtered. The filtrate is concentrated and chromatographed on silica gel (25-50% EtOAc/Hexanes) to afford (4-{4-[2-(6-Trifluoromethyl-pyridin-3-ylamino)-pyrimidin-5-yl]-phenyl}-cyclohexyl)-acetic acid methyl ester as 90% pure. (4-{4-[2-(6-Trifluoromethyl-pyridin-3-ylamino)-pyrimidin-5-yl]-phenyl}-cyclohexyl)-acetic acid methyl ester (45 mg, 0.096 mmol) is taken up in DMF (1.5 mL) and 4 M LiOH (0.5 mL) and stirred at room temperature for 16 h. The reaction is heated to 50° C. for 12 h and then heated to 70° C. for 8 h. The reaction is diluted with 1 N HCl (2 mL) and H2O (2 mL). The precipitate is collected by filtration and purified by HPLC (Xterra C8 30×100 mm, 22-50% ACN/H2O+5 mM NH4OH) to afford (4-{4-[2-(6-Trifluoromethyl-pyridin-3-ylamino)-pyrimidin-5-yl]-phenyl}-cyclohexyl)-acetic acid as a white solid: 1H NMR (400 MHz, DMSO-d6) δ ppm 1.05-1.18 (m, 2H) 1.43-1.56 (m, J=12.95, 12.66, 12.66, 3.16 Hz, 2H) 1.68-1.87 (m, 6H) 2.08 (d, J=6.57 Hz, 2H) 7.35 (d, J=8.34 Hz, 2H) 7.65 (d, J=8.34 Hz, 2H) 7.85 (d, J=8.59 Hz, 1H) 8.55 (dd, J=8.59, 2.02 Hz, 1H) 8.91 (s, 2H) 9.06 (d, J=2.27 Hz, 1H) 10.42 (s, 1H); (M+H)+457.0.

Provenance & Evidence