Nitrogen → (R)-4-((R)-1-((6-(2-(tert-butyl)thiazol-5-yl)-3-cyclopropyl-3H-imidazo[4,5-c]pyridin-4-yl)oxy)ethyl)pyrrolidin-2-one

Participants

Reaction Conditions

Reaction Steps

To a microwave tube equipped with a stirring bar, (R)-4-((R)-1-((3-cyclopropyl-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-3H-imidazo[4,5-c]pyridin-4-yl)oxy)ethyl)pyrrolidin-2-one: (167.0 mg, 0.405 mmol), 5-bromo-2-(tert-butyl)thiazole (133.8 mg, 0.608 mmol), 1,2-dimethoxyethane (2 mL), 1 N Na2CO3 aqueous solution (0.55 mL, 0.55 mmol) were added, the mixture was bubbled N2 for 5 minutes before Pd(PPh3)4 (10.6 mg, 0.009 mmol) was added. The tube was sealed and heated in an oil bath at 100° C. for 2 hrs. DCM (200 mL) was added and the resulting mixture was washed with saturated NaHCO3 aqueous solution (20 mL×4), brine (20 mL×1), dried over anhydrous Na2SO4, filtered, removed solvents in vacuo. The resulting residue was passed a ISCO silica gel column (MeOH: DCM=5:95) to give off-white solids, 9.8 mg (yield 5.7%). 1H NMR (300 MHz, DMSO-d6) δ 8.30 (s, 1H), 8.24 (s, 1H), 7.77 (s, 1H), 7.56 (broad s, 1H), 5.43 (m, 1H), 3.73-3.63 (m, 1H), 3.47-3.36 (m, 1H), 3.25-3.14 (m, 1H), 2.93-2.75 (m, 1H), 2.38-2.28 (m, 2H), 1.41 (s, 9H), 1.40-1.39 (m, 3H), 1.17-1.10 (m, 2H), 1.10-0.97 (m, 2H) ppm; MS (ESI+) m/z 426.61 (M+H).

Provenance & Evidence