Cesium carbonate → 1-[5-(2,6-dimethyl-phenyl)-1-(6-isopropoxy-pyridazin-3-yl)-1H-pyrrolo[2,3-c]pyridin-3-yl]-2-ethyl-butan-1-one

Participants

Reaction Conditions

Reaction Steps

To a solution of 1-[5-(2,6-dimethyl-phenyl)-1H-pyrrolo[2,3-c]pyridin-3-yl]-2-ethyl-butan-1-one (100 mg, 0.31 mmol) (Step 4, Example 1) in 2 mL of DMF, 3-chloro-6-isopropoxy-pyridazine (161 mg, 0.93 mmol) is added, followed by Cs2CO3 (306 mg, 0.93 mmol). The mixture is heated to 149° C. for 18 h under nitrogen. The mixture is diluted with EtOAc (7 mL) and washed with water (3×5 mL) and brine (5 mL), dried (Na2SO4), and concentrated under reduced pressure. Chromatography of the residue on silica gel (hexane-EtOAc, 1:1) gives 1-[5-(2,6-dimethyl-phenyl)-1-(6-isopropoxy-pyridazin-3-yl)-1H-pyrrolo[2,3-c]pyridin-3-yl]-2-ethyl-butan-1-one as colorless oil.

Provenance & Evidence