1,2-Dimethoxyethane → 1,1,1,3,3,3-Hexafluoro-2-(2-(4-(phenylsulfonyl)phenyl)-5-pyrimidinyl)-2-propanol

Participants

Reaction Conditions

Reaction Steps

A glass microwave reaction vessel was charged with 4,4,5,5-tetramethyl-2-(4-(phenylsulfonyl)phenyl)-1,3,2-dioxaborolane (196 mg, 0.57 mmol, Example 17, Step 2), 2-(2-chloropyrimidin-5-yl)-1,1,1,3,3,3-hexafluoropropan-2-ol (145 mg, 0.52 mmol, Intermediate D), (1,1′-bis(diphenylphosphino)ferrocene)dichloropalladium (24 mg, 0.03 mmol, Strem Chemical Inc, Newburyport, Mass.), cesium carbonate (0.51 g, 1.56 mmol, Sigma-Aldrich, St. Louis, Mo.), DME (1 mL), and water (0.1 mL). The reaction mixture was purged with nitrogen for several minutes, and then stirred and heated in an Emrys Optmizer microwave reactor (Personal Chemistry, Biotage AB, Inc., Upssala, Sweden) at 100° C. for 30 min. The reaction was diluted with EtOAc (about 10 mL) and water (about 10 mL). The organic layer was taken and the solvent was removed under vacuum. The crude material was absorbed onto a plug of silica gel and purified by chromatography through a silica gel column (12 g), eluting with a gradient of 10% to 20% EtOAc in hexane, to provide 1,1,1,3,3,3-hexafluoro-2-(2-(4-(phenylsulfonyl)phenyl)-5-pyrimidinyl)-2-propanol (171 mg) as an off-white solid. 1H NMR (400 MHz, DMSO-d6) δ 9.58 (s, 1H), 9.28 (s, 2H), 8.69 (d, J=8.61 Hz, 2H), 8.22 (d, J=8.61 Hz, 2H), 8.04-8.10 (m, 2H), 7.68-7.82 (m, 4H); m/z (ESI, +ve ion) 463.1 (M+H)+. GK-GKRP IC50 (Binding)=0.484 μM. GKRP EC50 (LC MS/MS-2)=0.478 μM.

Provenance & Evidence