Potassium Carbonate → (S)-tert-butyl 3-(2-(5-chloro-1-tosyl-1H-pyrrolo[2,3-b]pyridin-3-yl)-5-fluoropyrimidin-4-ylamino)piperidine-1-carboxylate

Participants

Reaction Conditions

Reaction Steps

To a solution of 5-chloro-1-(p-tolylsulfonyl)-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyrrolo[2,3-b]pyridine (1.8 g, 4.2 mmol) and tert-butyl (3S)-3-[(2-chloro-5-fluoro-pyrimidin-4-yl)amino]piperidine-1-carboxylate, 5a, (1.2 g, 3.7 mmol) in DME (15 mL) and H2O (5 mL) was added K2CO3 (1.7 g, 12.1 mmol). The mixture was purged with nitrogen for 15 min. To the mixture was added tetrakis triphenylphosphine palladium(0) (0.2 g, 0.2 mmol) and the reaction mixture was heated at 90° C. for 3 days. The reaction was cooled down to room temperature and then diluted with EtOAc/H2O. The layers were separated and the organic phase was washed with brine, dried (MgSO4), filtered and evaporated to dryness. The resulting residue was dissolved in CH2Cl2 and purified by silica gel chromatography (0-100% EtOAc/Hexanes) to afford the desired product, 1b.

Provenance & Evidence