Potassium Carbonate → Ethyl 3-[5-(5-{5-chloro-6-[(1-methylethyl)oxy]-3-pyridinyl}-1,2,4-oxadiazol-3-yl)-1H-indazol-1-yl]-2,2-dimethylpropanoate

Participants

Reaction Conditions

Reaction Steps

A mixture of 5-(5-{5-chloro-6-[(1-methylethyl)oxy]-3-pyridinyl}-1,2,4-oxadiazol-3-yl)-1H-indazole (D110) (335 mg, 0.94 mmol), ethyl 3-bromo-2,2-dimethylpropanoate (D98) (197 mg, 0.94 mmol) and K2CO3 (130 mg, 0.94 mmol) in DMF (5 ml) was stirred at 80° C. for 48 hours. The reaction mixture was then cooled to room temperature and partitioned between EtOAc and water (30 ml). The organic phase was separated, dried over MgSO4 and concentrated in vacuo. Purification of the residue by flash chromatography on silica gel [20% ethyl acetate/cyclohexane] gave the title compound (100 mg, 22%) as a colourless solid. MS (ES) C24H26ClN5O4 requires 483, found 484 [M+H]+

Provenance & Evidence