2-Fluoro-4-nitrophenol → 2-(1-Ethyl-1H-imidazol-5-yl)-7-(2-fluoro-4-nitrophenoxy)thieno[3,2-b]pyridine

Participants

Reaction Conditions

Reaction Steps

To a solution of 118 (4 g, 15.16 mmol) in Ph2O (60 ml) was added 2-fluoro-4-nitrophenol (4.76 g, 30.33 mmol) and potassium carbonate (8.38 g, 60.66 mmol). The reaction mixture was heated to 195° C. for 18 hrs the cooled to room temperature. The residue was purified by column chromatography (eluents EtOAc/Hex (9/1 to 5/5) then MeOH/CH2Cl2 (98/2)), to afford title compound 119 (3.05 g, 52% yield) as a yellow solid. MS (m/z): 385.0 (M+H).

Provenance & Evidence