Cesium carbonate → HCID 46831478, compound

Participants

Reaction Steps

To a mixture of 0.037 g (0.1 mmole) of 4-(3-chloro-phenyl)-2-(6-hydroxy-benzoimidazol-1-yl)-thiazole-5-carboxylic acid amide (I.25d), 0.060 g (0.2 mmole) of toluene-4-sulfonic acid 2-piperidin-1-yl-ethyl ester and 1 mL of dimethylformamide was added 0.160 g (0.5 mmole) of cesium carbonate. The reaction mixture was heated at 100 degrees for 3 hours. The mixture was cooled, the solid was removed by filtration and the filtrate purified by reverse phase silica gel chromatography, eluting with acetonitrile-water (gradient 30:70-100:0) to give 0.027 g of 4-(3-chloro-phenyl)-2-[6-(2-piperidin-1-yl-ethoxy)-benzoimidazol-1-yl]-thiazole-5-carboxylic acid amide (I.27) as a white powder. MH+/Z=482

Provenance & Evidence