Cesium carbonate → 4-[3-(3-bromophenyl)-1-(4-methoxybenzyl)-1H-pyrazol-4-yl]pyridine

Participants

Reaction Conditions

Reaction Steps

3 g (0.01 mol) of 4-[3-(3-bromophenyl)-1H-pyrazol-4-yl]pyridine were dissolved in 50 ml of dry dimethylformamide and 3.9 g (0.012 mol) of cesium carbonate and 1.6 ml (0.012 mol) of p-methoxybenzyl chloride were added. The mixture was stirred at 70° C. for 2 hours and the solvent removed in vacuo. The residue was taken up with dichoromethane and washed with water. The organic phase was dried over Na2SO4 and evaporated. Purification by column chromatography (dichloromethane-acetone 95/5) afforded 2 g (48% yield) of the title compound as an oil.

Provenance & Evidence